a)
\(4\left(x-1\right)-\left(3x+2\right)=16\)
=> 4x - 4 - 3x - 2 = 16
=> x - 6 = 16
=> x = 22
Vậy .......
b)
\(7\left(x-5\right)+5\left(15-x\right)=130\)
=> 7x - 35 + 75 - 5x = 130
=> 2x + 40 = 130
=> 2x = 90
=> x = 45
Vậy........
c)
\(30\left(x-2\right)-6\left(x-5\right)-22x=100\)
=> 30x - 60 - 6x + 30 - 22x = 100
=> 2x - 30 = 100
=> 2x = 130
=> x = 65
Vậy.....
d) \(x-17+x=x-23\)
=> 2x - 17 = x - 23
=> x = -6
Vậy .......
a) 4(x-1)-(3x+2)=16 b)7(x-5)+5(15-x)=130
<=>4x-4-3x-2=16 <=>7x-35+75-5x=130
<=>x-6=16 <=>2x+40=130
<=>x=22 <=>2x=90
<=>x=45
c) 30(x- 2 ) - 6( x - 5 ) - 22x = 100 d) x-17+x=x-23
<=>30x-60-6x+30-22x=100 <=>2x-x=-23+17
<=>2x-30=100 <=>x=-6
<=>2x=130
<=>x=65
a) 4(x-1)-(3x+2)=16
<=>4x-4-3x-2=16
<=>x-6=16
<=>x=22
c) 30(x- 2 ) - 6( x - 5 ) - 22x = 100
<=>30x-60-6x+30-22x=100
<=>2x-30=100
<=>2x=130
<=>x=65
b)7(x-5)+5(15-x)=130
<=>7x-35+75-5x=130
<=>2x+40=130
<=>2x=90
<=>x=45
d) x-17+x=x-23
<=>2x-x=-23+17
<=>x=-6
<=>2x=130
<=>x=65