Question

Calcule a soma das frações:
a)1/2 + 4/5 =
b)5/6 + 1/2 =
c)9/5 + 3/4 =
d)2/3 + 3/5 + 5/7 =

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Answer 1

A )

$\frac{1}{2} + \frac{4}{5}$

$\frac{5 \times 1 + 2 \times 4}{10}$

$\frac{13}{10}$

$1 \frac{3}{10}$

B )

$\frac{5}{6} + \frac{1}{2}$

$\frac{5 + 3 \times 1}{6}$

$\frac{8}{6}$

$\frac{8 \div 2}{6 \div 2}$

$\frac{4}{3}$

C )

$\frac{9}{5} + \frac{3}{4}$

$\frac{4 \times 9 + 5 \times 3}{20}$

$\frac{51}{20}$

$2\frac{11}{20}$

D )

$\frac{2}{3} + \frac{3}{5} + \frac{5}{7}$

Essa mandei por foto so olha ai.

ESPERO TER AJUDADO