Question

1)Resouva com o cálculo abaixo:

A) 7/4 - 18/4 + 9/4=


B)28/5+(-9/5)-(-13/5)=

Answer 1

A)

7/4 -18/4 + 9/4
= -11/4 + 9/4
= -2/4 (÷2)
= -1/2

B)

28/5+(-9/5)-(-13/5)
= 28/5 -9/5 +13/5
= 19/5 + 13/5
= 32/5