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3x - 7x = -8 - 12
-4x = - 20
x = -20/-4
x = 5
jadi X + 2
5 + 2 = 7
semoga bermanfaat
3x - 7x = -8 - 12
-4x = -20
x =
x = 5
nilai dari x + 2:
x + 2
= 5 + 2
= 7