tolong dijawab ya.... yang no 9&10

9•

a = -15
b = 12
c = -8

a × (b - c)
= (-15) × (12 - (-8))
= (-15) × (12 + 8)
= (-15) × 20
= -300

10•

a = 9
b = -6
c = -7

(a + b) + c
= (9 + (-6)) + (-7)
= (9 - 6) - 7
= 3 - 7
= -4

9. a x (b-c)
= (-15) x ( 12 - (-8) )
= (-15) x (12 + 8)
= (-15) x (20)
= -300

10. (a+b) + c
= (9+(-6)) + (-7)
= (9-6)-7
= 3 - 7
= -4

maaf kalo salah hehe