Tìm X
X x 405= 86 265
89 658 : X = 293
X + 126 = 480
X - 209 = 435
X : 13 = 200 + 5
X x 40 = 26 000 - 400
962 456 - X = 342 x 7
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
X + 126 = 480
\(\Rightarrow\)X = 480 - 126 = 354
X - 209 = 435
\(\Rightarrow\)X = 435 + 209 = 644
a) 89 658 : x = 293
x = 89 658 : 293
x = 306
b) 54 322 : x =346
x = 54 322 : 346
x = 157
c)106 141 : x =413
x = 106 141 : 413
x = 257
a) 89 658 : x = 293
x = 89 658 : 293
x = 306
Vậy x = 306
b) 54 322 : x = 346
x = 54 322 : 346
x = 157
Vậy x = 157
c) 106 141 : x = 413
x = 106 141 : 413
x = 257
Vậy x = 257
a) 71 - (33 + x) = 26
⇔ 71 - 33 - x = 26
⇔ 38 - x = 26
⇔ x = 38 - 26
⇔ x = 12
b) (x + 73) - 26 = 76
⇔ x + 73 - 26 = 76
⇔ x + 47 = 76
⇔ x = 76 - 47
⇔ x = 29
c) 45 - (x + 9) = 6
⇔ 45 - x - 9 = 6
⇔ 36 - x = 6
⇔ x = 36 - 6
⇔ x = 30
d) 89 - (73 - x) = 20
⇔ 89 - 73 + x = 20
⇔ 16 + x = 20
⇔ x = 20 - 16
⇔ x = 4
e) (x + 7) - 25 = 13
⇔ x + 7 - 25 = 13
⇔ x - 18 = 13
⇔ x = 13 + 18
⇔ x = 31
f) 198 - (x + 4) = 120
⇔ 198 - x - 4 = 120
⇔ 194 - x = 120
⇔ x = 194 - 120
⇔ x = 74
g) 140 : (x - 8) = 7
⇔ x - 8 = 140 : 7
⇔ x - 8 = 20
⇔ x = 20 + 8
⇔ x = 28
h) 4(x + 41) = 400
⇔ x + 41 = 400 : 4
⇔ x + 41 = 100
⇔ x = 100 - 41
⇔ x = 59
i) 11(x - 9) = 77
⇔ x - 9 = 77 : 11
⇔ x - 9 = 7
⇔ x = 7 + 9
⇔ x = 16
j) 5(x - 9) = 350
⇔ x - 9 = 350 : 5
⇔ x - 9 = 70
⇔ x = 70 + 9
⇔ x = 79
k) 2x - 49 = 5.32
⇔ 2x - 49 = 45
⇔ 2x = 45 + 49
⇔ 2x = 94
⇔ x = 94 : 2
⇔ x = 47
l) 200 - (2x + 6) = 43
⇔ 200 - 2x - 6 = 64
⇔ 194 - 2x = 64
⇔ 2x = 194 - 64
⇔ 2x = 130
⇔ x = 130 : 2
⇔ x = 65
a) 71 - (33 + x) = 26
⇔ 33+x=71-26
⇔ 33 + x = 45
⇔ x = 45 - 33
⇔ x = 12
Vậy x=12
b) (x + 73) - 26 = 76
⇔ (x + 73) = 76+26
⇔ x + 73 = 102
⇔ x = 102-73
⇔ x = 29
Vậy x=29
c) 45 - (x + 9) = 6
⇔ x + 9 = 45 - 6
⇔ x+9 = 39
⇔ x = 39 - 9
⇔ x = 30
Vậy x=30
a,456*65+456*34+456
=456*65+456*34+456*1
=456*(65+34+1)
=456*100
=45600
123,45 + 23,56 +76,44 + 54,55
= (123,45 + 54,55) + (23,56 + 76,44)
= 178 + 100
= 278
456 x 45 + 456 x 10 + - 456 x 55
=456 x (45 +10-55)
=456 x 0
=0
2,5 x 8,5 + 7,5 x 8,5
=8,5 x (2,5 +7,5)
= 8,5 x 10
= 85
86 x 5 + 86 x 4 + 86
= 86 x (5+4+1)
= 86 x10
860
a, 27 x 39 + 27 x 63 - 2 x 27
= 27 x ( 39 + 63 - 2 )
= 27 x 100
= 2700
b, 128 x 46 + 128 x 32 + 128x 22
= 128 x ( 46 + 32 + 22 )
= 128 x 100
= 12800
c, 12 x 35 + 35 x 182 - 35 x 94
= 35 x ( 12 + 182 - 94 )
= 35 x 100
= 3500
d, 456 : 2 x 18 + 456 : 3 - 102
= 228 x 18 + 152 - 102
= 4104 + 50
= 4154
\(\text{a, 27 x 39 + 27 x 63-2 x 27 =27 x (39+63-2) = 27 x 100 =2700}\)
\(\text{b, 128 x 46 +128 x 32 +128 x 22 =128 x (46+32+22)=128 x 100=12800}\)
\(\text{c , 12 x 35 +35 x 182 -35 x 94 =35 x (12+182-94)=35 x 100=3500.}\)
\(\text{d, 456:2 x 18 +456 :3 -102 =4140+152-102=4190}\)
2,
\(45-\left(x+9\right)=6\Rightarrow45-x-9-6\Rightarrow36-x=6\Rightarrow x=30\)
\(x+7-25=13\Rightarrow x-18=13\Rightarrow x=31\)
\(450:\left(x-19\right)=50\Rightarrow x-19=9\Rightarrow x=28\)
\(4\times\left(x+41\right)=400\Rightarrow x+41=100\Rightarrow x=59\)
\(x+73-26=76\Rightarrow x+47=76\Rightarrow x=31\)
a) \(\Leftrightarrow-x+38=26\)
\(\Leftrightarrow x=12\)
b)\(\Leftrightarrow x+47=76\)
\(\Leftrightarrow x=29\)
c)\(\Leftrightarrow-x+36=6\)
\(\Leftrightarrow x=30\)
d)\(\Leftrightarrow x+16=20\)
\(\Leftrightarrow x=4\)
e)\(x-18=13\)
\(\Leftrightarrow x=31\)
f)\(-x+194=120\)
\(\Leftrightarrow x=74\)
g)\(\Leftrightarrow x-8=20\)
\(\Leftrightarrow x=28\)
h)\(\Leftrightarrow4x+84=400\)
\(\Leftrightarrow x=79\)
a) 71-(33+x)=26
33+x=71-26
33+x=45
x=45-33
x=12
Vậy x=12
b) ( x+73)-26=76
x+73=76+26
x+73=102
x=102-73
x=29
Vậy x=29
c)45-(x+9)=6
x+9=45-6
x+9=39
x=39-9
x=30
Vậy x=30
d) 89-(73-x)=20
73-x=89-20
73-x=69
x=73-69
x=4
Vậy x=4
e) ( x+7)-25=13
x+7=13+25
x+7=38
x=38-7
x=31
Vậy x=31
f)198-(x+4)=120
x+4=198-120
x+4=78
x=78-4
x=74
Vậy x=74
g)140:(x-8)=7
x-8=140:7
x-8=20
x=20+8
x=28
Vậy x=28
h) 4(x+41)=400
x+41=400:4
x+41=100
x=100-41
x=59
Vậy x=59
a) x x 405 = 86265
x = 86265 : 405
x = 213
b) 89658 : x = 293
x = 89658 :293
x = 306
\(x\times405=86265\)
\(x=86265:405\)
\(x\text{=}213\)
\(89658:x=293\)
\(x=89658:293\)
\(x\text{=}306\)
\(x+126=480\)
\(x=480-126\)
\(x=354\)
\(x-209\text{=}435\)
\(x\text{=}435+209\)
\(x\text{=}644\)
\(x:13=200+5\)
\(x:13\text{=}205\)
\(x\text{=}205\times13\)
\(x\text{=}2665\)
\(x\times40\text{=}26000-400\)
\(x\times40=25600\)
\(x\text{=}25600:40\)
\(x\text{=}640\)
\(962456-x=342\times7\)
\(962456-x=2394\)
\(x\text{=}962456-2394\)
\(x\text{=}960062\)