Question

Alguém ajudaaa pfvr​

Answer 1

a)

(+5)×(-2)=

(5)×(-2)=

-5×2=

-10

b)

(-3)×(+4)=

(-3)×(4)=

-3×4=

-12

c)

(-8)×(-9)=

8×9=

72

d)

(+10)×(-7)=

(10)×(-7)=

-10×7=

-70

e)

(+15)÷(-3)=

 $\frac{15}{-3} =\\-\frac{15}{3} =\\-5$

f)

(-100)÷(-25)=

$\frac{-100}{-25} =\\\frac{100}{25}=\\4$

g)

(-45)÷(+9)=

$\frac{-45}{9} =\\-\frac{45}{9}=\\-5$

Espero ter ajudado!!!