jika 3x+12=7x-8,tentukn nilai dari x+2

3x + 12 = 7x - 8
3x - 7x = - 8 - 12
-4x = - 20
x = -20/-4
x = 5

x + 2
5 + 2
= 7

Semoga membantu

3x+12 = 7x-8
-4x = -20
x = 5

x + 2 = 5 + 2 = 7