Question

6) Resolva as seguintes expressões:
a) -−7+4,5
8

b) 13 + 19
4 5



c) 8 - -5
11 3

d)70,05-12,4

e)50-4,99

Answer 1

Resposta:

A_3,775

B_7,05

C_2,38

D_57,65

E_45,01

Explicação passo-a-passo:

A)_

$\: - \frac{7}{8} = -0,875 \\ 4,5-0,875=3,775$

B)_

$\frac{13}{4} + \frac{19}{5} =3,25 + 3,8 = 7,05$

C)_

$\frac{8}{11} - \frac{5}{3} = 0,72... + 1,66... = 2,38$

D)_

$70,05 - 12,4 = 57,65$

E)_

$50-4,99=45,01$