Question

6 + 8x = -x + 33
-12x - 18 + 9x = -9

Answer 1

$6 + 8x = - x + 33 \\ 8x + x = 33 - 6 \\ 9x = 27 \\ x = \frac{27}{9} \\ x = 3$

$- 12x - 18 + 9x = - 9 \\ - 3x = - 9 + 18 \\ - 3x = 9 \\ x = \frac{9}{ - 3} \\ x = - 3$

Answer 2

1) 6+8х=-х+33

8х+х=33-6

9х=27

х=27/9

х=3

2) -12х-18+9х=-9

-12х+9х=-9+18

-3х=9

х=9/(-3)

х=-3