Explicação passo-a-passo:
b)3×(-3)+8=-9+8=-1
c)-17+5×(-2)=-17-10=-27
d)(-9)×4+14=-36+14=-50
e)(-7)×(-5)-(-2)=35+2=37
f)(+4)×(-7)+(-5)×(-3)=-28+15=43
g)(-3)×(-6)+(-2)×(-8)=18+16=34
h)(+3)×(-5)-(+4)×(-6)=-15-(-24)=-15+24=+9
i)-14+42÷3=-14+14=0
j)40÷(-2)+9=-20+9=-11
l)(-12)÷3+6=-4+6=+2
m)(-54)÷(-9)+2=+6+2=8
n)20+(-10)×(-5)=20+(+50)=20+50=70
o)(-1)×(-8)+20=+8+20=28
p)4+6×(-2)=+4-12=-8
q)3×(-7)+40=-21+40=19
deu trabalho pra responder!
muitas questões!
