Question

12x – 6 – 6x = 9x – 30 – 7x
6
-20
-6
0​

Answer 1

Explicación paso a paso:

12x-6x-9x=-30-7+6

-3x=-31

Answer 2

$12x - 6 - 6x = 9x - 30 - 7x \\ 6x - 6 = 2x - 30 \\ 6x - 2x = - 30 + 6 \\ 4x = - 24 \\ x = - 24 \div 4 \\ x = - 6$