Question

помогите решить
30+9х-24+12-2х=-24

Answer 1

30+9x-24+12-2x=24
9x+2x+30-24+12=24
12x+18=24
x=24-18
x=12:6
x=2

Answer 2

30+9х-24+12-2х=-24
9х-2х=-24-30+24-12
7х=-42
х=-42:7
х=-6