tìm x : x + 16 + 36 < 56 + 4
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a) \(58+7x=100\)
\(=>7x=100-58\)
\(=>7x=42\)
\(=>x=42:7\)
\(=>x=6\)
b) \(3x-7=28\)
\(=>3x=28+7\)
\(=>3x=35\)
\(=>x=35:3\)
\(=>x=\dfrac{35}{3}\)
c) \(x-56:4=16\)
\(=>x-14=16\)
\(=>x=16+14\)
\(=>x=30\)
d) \(101+\left(36-4x\right)=105\)
\(=>36-4x=105-101\)
\(=>36-4x=4\)
\(=>4x=36-4\)
\(=>4x=32\)
\(=>x=32:4\)
\(=>x=8\)
e) \(\left(x-12\right):12=12\)
\(=>x-12=12.12\)
\(=>x-12=144\)
\(=>x=144-12\)
\(=>x=132\)
f) \(\left(3x-2^4\right).7^3=2.7^4\)
\(=>3x-2^4=2.7^4:7^3\)
\(=>3x-16=2.7=14\)
\(=>3x=14+16\)
\(=>3x=30\)
\(=>x=30:3\)
\(=>x=10\)
i) \(\left(10+2x\right).4^{2011}=4^{2013}\)
\(=>10+2x=4^{2013}:4^{2011}\)
\(=>10+2x=4^2=16\)
\(=>2x=16-10\)
\(=>2x=6\)
\(=>x=6:2\)
\(=>x=3\)
\(#WendyDang\)
a: =>7x=42
hay x=6
b: =>5x=35
hay x=7
c: =>x-14=16
hay x=30
d: =>36-4x=4
=>4x=32
hay x=8
e: =>x-12=144
hay x=156
f: =>3x-16=14
hay x=10
g: =>x+33=45
hay x=12
h: =>(x+9):2=39
=>x+9=78
hay x=69
a: =>7x=42
hay x=6
b: =>5x=35
hay x=7
c: =>x-14=16
hay x=30
d: =>36-4x=4
=>4x=32
Bài 3a) 576 + 678 + 780 - 475 - 577 - 679
= ( 578 - 475 ) + ( 678 - 577 ) + ( 780 - 679 )
= 103 + 101 + 101
= 305
b) ( 126 + 32 ) x ( 18 - 16 - 2 )
= 158 x 0
= 0
c) 36 x 17 + 12 x 34 + 6 x 30
= 6 x 6 x 17 + 6 x 2 x 34 + 6 x 30
= 6 x 102 + 6 x 68 + 6 x 30
= 6 x ( 102 + 68 + 30 )
= 6 x 200
= 1200
Bài 4:a. x × 6 = 3048 : 2
x × 6 = 1524
x = 1524 : 6
x = 254
b. 56 : x = 1326 – 1318
56 : x = 8
x = 56 : 8
x = 7
a: x-56:4=16
nên x-14=16
hay x=30
b: \(101+\left(36-4x\right)=105\)
\(\Leftrightarrow36-4x=4\)
hay x=8
Vì a: x-56:4=16
=>x-14=16
Hay:x=30
Vì b: 101+(36−4x)=105101+(36−4x)=105
⇔36−4x=4⇔36−4x=4
Hay:x=8
Vậy x={30:8}
Nếu sai thì thui nhá,đừng chửi mình!
a) (37 – 18) + 17 = 19 + 17 = 36
b) 56 – (35 – 16) = 56 – 19 = 37
c) (6 + 5) x 8 = 11 × 8 = 88
d) 36 : (62 – 56) = 36 : 6 = 6
x + 16 + 36 < 56 + 4
=> x + 52 < 56 + 4
=> x + 52 < 60
=> x = 0;1;2;3;4;5;6;7
x + ( 16 + 36 ) < 60
x +52 < 60
Vậy x có thể bằng 0; 1; 2; 3; 4; 5; 6; 7