Question

resolva as expressões a seguir
A)
$\frac{5}{3} - \frac{3}{8} + 2. \frac{1}{4}$
B)
$\frac{7}{4} + \frac{3}{10} \div \frac{8}{15}$

Answer 1

Oi

a) 5/3 - 3/8 + 2 1/4

5/3 - 3/8 + 9/4==<o mmc de 3,8,4 = 24

40 - 9 + 54/24

$\boxed{85/24}$

b) 7/4 + 3/10 ÷ 8/15

7/4 + 3/10 × 15/8

7/4 + 45/80= 0 mmc de 4, 80 = 80

140 + 45/80

185/80 ÷ 5

$\boxed{37/16}$

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