pakai caranya tolong banget

Pembahasan :

5(x - 1) - 7(x - 3) = 2(x + 3)
(5x - 5) - (7x - 21) = (2x + 6)
Buka masing-masing tanda kurung :
5x - 5 - 7x + 21 = 2x + 6
5x - 7x + 16 = 2x + 6
5x - 7x - 2x = 6 - 16
-4x = -10
x = 10/4
x = 5/2

Jawaban : c.