câu cuối nhé nhanh mk k
x - 6 : 2 - ( 48 -24 . 2 : 6 -3 ) =0
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a.390 - (x - 7) = 169 : 13
390 - (x - 7) = 13
x - 7 = 390 - 13
x = 377 + 7
x = 384
b.(x - 140) : 7 = 33 - 23.3
(x - 140) : 7 = 3
x - 140 = 3 . 7
x = 21 + 140
x = 161
c.x - 6:2 - (48-24):2: 6-3 = 0
x - 3 -2 - 3 = 0
x = 3 + 2 + 3
x = 8
\(a.390-\left(x-7\right)=169:13\)
\(390-\left(x-7\right)=13\)
\(\left(x-7\right)=390-13\)
\(x-7=377\)
\(x=377+7\)
Vậy \(x=384\)
\(b.\left(x-140\right):7=3^3--2^3.3\)
\(\left(x-140\right):7=3^3+2^3.3\)
\(\left(x-140\right):7=27+8.3\)
\(\left(x-140\right):7=27+24\)
\(\left(x-140\right):7=51\)
\(\left(x-140\right)=51.7\)
\(x-140=357\)
\(x=357+140\)
Vậy \(x=497\)
\(c.x-6:2-\left(48-24\right):2:6-3=0\)
\(x-3-24:2:6-3=0\)
\(x-3-12:6-3=0\)
\(x-3-2-3=0\)
\(x-\left(-2\right)=0\)
\(x+2=0\)
\(x=0-2\)
Vậy \(x=-2\)
Chúc bạn học tốt nha!
a,7.x-8=6
x-8=6:7
x-8=6/7
x=6/7+8
x=62/7
Vậy x=62/7
b, 8.(x-5)=0
x-5=0:8
x-5=0
x=0+5
x=5
Vậy x = 5
c, x -6:2-(48-24.2:6-3)=0
x-6:2-(48-48:6-3)=0
x-6:2-(48-8-3)=0
x-6:2-(40-3)=0
x-6:2-37=0
x-6:2=0+37
x-3=37
x=37+3
x=40
Vẫy=40
x - 6 : 2 ( 48 - 24 ) : 2 : 6 - 3 = 0
x - 6 : 2 . 24 : 2 : 6 - 3 = 0
x - 6 - 3 = 0
x - 9 = 0
x = 9
x-6:2 ( 48-24) :2 :6 - 3 = 0
=>x-6:2(48-24):2:6= 3
=> x-6:2(48-24):2 = 18
=> x-6:2(48-24)= 36
=> x- 6:2. 24= 36
=> x- 6: 48= 36
=>x +8=36
=> x= 36-8
=>x= 28
x + 5 . 2 - ( 32 + 16 . 3 : 6 - 15 ) = 0
x + 10 - ( 32 + 8 - 15 ) = 0
x + 10 - 25 = 0
x - 15 = 0
x = 15
x - 6 : 2 - ( 48 - 24 ) : 2 : 6 - 3 = 0
x - 3 - 24 : 2 : 6 - 3 = 0
x - 3 - 2 = 0
x - 5 = 0
x = 5
x + 5 . 2- (32+48:6-15)=0
x+5.2-(32+8-15)=0
x+5.2-25=0
x+10=0+25=25
x=25-10
x=15
cau sau cung tuong tu nhu zay
tự làm nha
nhớ k đó
X-6:2-(48-24):2:6=0+3
X-6:2-(48-24):2:6=3
X-6:2-(48-24):2=3x6
X-6:2-(48-24):2=18
X-6:2-(48-24)=18x2
X-6:2-(48-24)=36
X-3-24=36
X-3=36+24
X-3=60
X=60+3
X=63
x-6:2-(48-24):2:6-3=0
=> x-3-24:2:6-3=0
=> x-3-2-3=0
=> x=0+3+2+3
=> x=8
x-6:2-(48-24):2:6-3=0
=> x-3-24:2:6-3=0
=> x-3-2-3=0
=> x= 0+3+2+3
=> x=8
X-6:2-(48-24.2:6-3)=0
X-3-(48-48:6-3)=0
X-3-(48-8-3)=0
X-3-37=0
X-(3+37)=0
X-40=0
X=0+40
X=40
số cần tìm là 36 nha 100% đấy