Question

A)-x+2x=-7+15-3x-8x+2x
B)9x+3x--4=3x+x-1+x+2

Answer 1

A) - x + 2x = - 7 + 15 - 3x - 8x + 2x
- x + 2x + 3x + 8x - 2x = - 7 + 15
x + 11x - 2x = 8
12x - 2x = 8
10x = 8
x = 8/10 (÷2)
x = 4/5



B)9x + 3x - 4 = 3x + x - 1 + x + 2
9x + 3x - 3x - x - x = - 1 + 2 + 4
12x - 4x - x = 1 + 4
8x - x = 5
7x = 5
x = 5/7