Question

a)2x+10=2-6+6x+15 b)x+2-x-2=2+x

Answer 1

a)
$2x + 10 = 2 - 6 + 6x + 15 \\ 2x + 10 = 11 + 6x \\ 2x - 6x + 10 = 11 - 10 \\ - 4x = 11 - 10 \\ - 4x = 1 \\ x = - \frac{1}{4}$
b)
$x + 2 - x - 2 = 2 + x \\ 2 - x - 2 = 2 + 0 \\ - x - 2 = 0 \\ - x = 2 \\ x = - 2$