Question

Calcule as frações abaixo

A)2/3+3/15
B)8/12+3/5
C)3/4-1/3
D)7/16+4/2
E)3/5+4/7
F)8/10+3/4
G)4/18+8/12
H)4/9-10/8

Answer 1

A)

$\frac{2}{3} + \frac{3}{15} = \frac{9 + 30}{45} = \frac{39}{45} = \frac{18}{15}$

B)

$\frac{3}{4} + \frac{1}{3} = \frac{13}{12}$

C)

$\frac{3}{4} + \frac{1}{3} = \frac{13}{12}$

D)

$\frac{7}{16} + \frac{4}{2} = \frac{78}{32} = \frac{39}{16}$

E)

$\frac{8}{10} + \frac{3}{4} = \frac{62}{40} = \frac{32}{20}$

F)

$\frac{4}{18} + \frac{8}{12} = \frac{192}{216} = \frac{8}{9}$

G)

$\frac{4}{9} - \frac{10}{8} = \frac{ - 58}{72} = \frac{-29}{36}$