Question

Calcule as expressões a seguir

a)(-4+20)÷(-8)
b)(-6-14)÷(-6+1)
c)(-8)•(+3)-(-15)÷(+3)
d)[-8+(-4)•(-3)]÷(-1-1)
e)(-6-2+3)÷[-3•(-2+3)+8]​

Answer 1

a)(-4+20)÷(-8)=(16)÷(-8)=-2

b)(-6-14)÷(-6+1)=(-20)÷(-5)=4

c)(-8)•(+3)-(-15)÷(+3)=(-24)-(-5)=-24+5=-19

d)[-8+(-4)•(-3)]÷(-1-1)

[-8+12]÷(-2)=4÷(-2)=-2

e)(-6-2+3)÷[-3•(-2+3)+8]

(-5)÷[-3(1)+8]

(-5)÷[-3+8]

(-5)÷5=-1