Question

Resolva as expressões abaixo:

a)120-40÷5+(-9)×(-6)
b)(-20+30)×(-8-7)+(-40-60)÷(-6-4)
c)6-(-45)÷(-9)+(-3).(-4)
d)(-30-70)÷(-10-15)×(-12+20)

Me ajudem porfavor,preciso dos cálculos.

Answer 1

A) 120-40:5+(-9)x(-6)
=120-8+54= 166

B) (-20+30)x(-8-7)+(-40-60):(-6-4)
=10x(-15)+(-100):-(10)
=150+10= -140

C)6-(-45):(-9)+(-3)x(-4)
=6+45:(-9)+12
=6-5+12= 13

D)(-30-70):(-10-15)x(-12+20)
=(-100):(-25)x8
=800:25=32