Tentukan hasilnya? Tolong dibantu.. 1. (-2+b) x 7+(-4) 2. -5+(-4)x ( -5-3) 3. 3(-19-17) : (-8+(-4)

1. (-2+b) x (7-4)
= (-2+b) x 3
= -6+ 3b
6=3b, b=2
2. -5 + {(-4) (-8)}
= -5 +32 = 27
3. 3(-36) : (-12)
= -108 : -12
= 9
inshaallah:)