Question

??????????????????????​

Answer 1

A) 5/4
B)26/35
C)1/4
D)1/120

Answer 2

Explicação passo-a-passo:

$a) \frac{1}{2} + \frac{3}{4} = \: mmc = 4$

$\frac{2 + 3}{4 } = \frac{7}{4}$

$b) \frac{3}{5} + \frac{1}{7} = \: \: mmc = 35$

$\frac{21 + 5}{35} = \frac{26}{35}$

$c) \frac{3}{4} - \frac{1}{2} = \: \: mmc = 4$

$\frac{3 - 2}{4} = \frac{1}{4}$

$d) \frac{1}{8 } - \frac{2}{5} + \frac{2}{3} = \: \: mmc = 120$

$\frac{15 - 48 + 80}{120} = \frac{47}{120} = \frac{74}{120}$