Question

3(x-1)-(x-3)+5(x-2)=18



outra 
5(x-3)-4(x+2)=2+3(1-2x)

Answer 1

1)
3x-3-x+3+5x-10=18
7x=18+10
7x=28
x=28/7
x=4


2)
5x-15-4x-8=2+3-6x
6x+5x-4x=15+8+3+2
7x=28
x=28/7
x=4

Answer 2

3 ( x - 1 ) - ( x - 3 ) + 5 ( x - 2 ) = 18

3x - 3 - x + 3 + 5x - 10 = 18

3x - x + 5x = 18 + 3 - 3 + 10

7x = 28

x = 28/7

x = 4


5 ( x - 3 ) - 4 ( x + 2 ) = 2 + 3 ( 1 - 2x )

5x - 15 - 4x - 8 = 2 + 3 - 6x

5x - 4x + 6x = 2 + 3 + 15 + 8

7x = 28

x = 28/7

x = 4