Question

1. Jika a=7 b=6 c=12 hitunglah
A- (a+b)+c=
B- a+(b+c)=
2.Jika a=-9 b=7 c=-5
A- (a+b)+c=
B- a+(b+c)=
Isiin sayang yah;)

Answer 1

A -(7+6)+12
=-13+12
=-1
b -7+(6+12)
=-7+ 18
=-11

A -(9+7)+5
=-16+5
=-11
B -9+(7+5)
=-9 + 12
=3

Answer 2

A : (7+6)+12=25
b : 7+(6+12)=25

a : (-9+7)+-5=21 (positif)
b : -9+(7+-5)=21 (positif)