Question

-7/8+4,5 cálculo
(-45/49)x48/18
(-36/15)x (-50/12)
8,7x5/4​

Answer 1

Resposta:

Explicação passo-a-passo:

A)

= -7/8+4,5

= - 7/8 + 45/10 (:5)/(:5)

= - 7/8 + 9/2

= ( - 7 + 4.9)/8

= (-7 + 36)/8

= 29/8

B)

(-45/49)x48/18 (:6)/(:6)

= - 45/49 . 8/3

= - 45/3 . 8/49

= - 15 . 8/49

= - 120/49

C)

(-36/15)x (-50/12)

= - 36/15 (:3)/(:3) . (- 50/12) (:2)/(:2)

= 12/5 . 25/6

= 12/6 . 25/5

= 2.5

= 10

D)

8,7x5/4

= 87/10 . 5/4

= 5/10 (:5)/(:5) . 87/4

= 1/2 . 87/4

= 87/8