-12 × [4 + (-18)] = [(-12) × b)] berapakah nilai b yang tepat???

-2 × [4+(-8)] = [(-12) × b ]
-2 × [4-8] = -12× b
-2 × -4 = -12 × b
8 = -12 × b
b = -12 - 8
b = -20

kayaknya gtu