Question

a.(7 +3 -4 +8 -6 + 12)=
b.(12 +3 -5 + 9 -8 +17)=
c.(-9 +3-6 +8 +14-7)=
d.(18-3 +5 -9 -6 +12)=

Answer 1

Respuesta:

a.(7 +3 -4 +8 -6 + 12)=  20

b.(12 +3 -5 + 9 -8 +17)=  28

c.(-9 +3-6 +8 +14-7)=  3

d.(18-3 +5 -9 -6 +12)= 17

Explicación paso a paso: