Question

Alguem me ajuda?

A) 3

----- de 60

4



4 B) 4 1

------ + -------

5 5

C) 8 4

------ - -------

7 5

D) 8 2

----- ÷ ------

3 5

Answer 1

a) $\frac{3}{4}.60=\frac{3.600}{4} =\frac{180}{4} =45$

b) $\frac{4}{5} +\frac{1}{5}=\frac{4+1}{5}=\frac{5}{5} =1$

c) $\frac{8}{7} +\frac{4}{5} =\frac{40+28}{35}=\frac{68}{35}$

d)  $\frac{8}{3} +\frac{2}{5}=\frac{40+6}{15}=\frac{46}{15}$