Question

Resolva as expressoes
(-8).(-7)=
(+23).(+3)=
(+2).(-27)=
(-40):(+2)=
(+20):(-4)=
(-18):(-3)=
(+36):(+4)=

Answer 1

a) -8 *-7 = + 56
b) +23*+3 = + 69
c) +2*-27 = -54
d) -40 /+2 = -20
e) +20 /-4 = - 5
f) -18 / -3 = + 6
g) +36 / +4 = +9