tolong bantu ngerjain soalnya nya pake cara

Kelas 7 Matematika
Bab Persamaan Linear

3(4x + 6) = 2(3x - 6) + 18
12x + 18 = 6x - 12 + 18
12x - 6x = 6 - 18
6x = -12
x = -12/6
x = -2

y + 5
= -2 + 5
= 3