Question

a)3(2x+3)-4(x-1)=3 b)7(x-1)-2(x-5)=x-5 c)2(3-x)=3(x-4)+15

Answer 1

a)3(2x+3)-4(x-1)=3
6x + 9 - 4x + 4 = 3
6x - 4x = 3 - 9 - 4
2x = - 10
x = - 5

b)7(x-1)-2(x-5)=x-5
7x - 7 - 2x + 10 = x - 5
7x - 2x - x = - 5 + 7 - 10
4x = - 8
x = - 2


c)2(3-x)=3(x-4)+15
6 - 2x = 3x - 12 + 15
- 2x - 3x = - 12 + 15 - 6
- 5x = - 3 . (-1)
5x = 3
x = 3/5

Answer 2

a) 3(2x+3)-4(x-1)=3
6x+9-4x+4=3
6x-4x=3-4-9
2x=3-13
2x=-10
x=-10/2
x=-5
b) 7(x-1)-2(x-5)=x-5
7x-7-2x+10=x-5
7x-2x-x=-5-10+7
5x-x=-15+7
4x=-8
x=-8/4
x=-2
c) 2(3-x)=3(x-4)+15
6-2x=3x-12+15
-2x-3x=-12+15-6
-5x=3-6
-5x=-3.(-1)
5x=3
x=3/5