Question

Ecuaciones a resolver
A) 6.x +21=4.X-3
B)X: (-2)+6=7

Answer 1

a)

$6x + 21 = 4x - 3 \\ 6x - 4x = - 3 - 21 \\ 2x = - 24 \\ x = - 12$

b)

$x \div ( - 2) + 6 = 7 \\ - \frac{1}{2} x + 6 = 7 \\ - x + 12 = 14 \\ - x = 14 - 12 \\ - x = 2$