Question

-10+(8+3)
6+(-12)
6+(-12+-4)
9+7
9+(7+(-1))

Answer 1

Jawaban :
-10 + ( 8 + 3 )
= -10 + 11
= 1

6 + ( -12 )
= -6

6 + { -12 + ( -4 ) }
= 6 + ( -16 )
= -10

9 + 7
= 16

9 + { 7 + ( -1 ) }
= 9 + 6
= 15