Question

Me ajudem e pra amanhã

Answer 1

Resposta:

$a) \: \frac{7}{13} + \frac{2}{13} = \frac{7 + 2}{13} = \frac{9}{13}$

$b) \: \frac{8}{15} - \frac{2}{15} = \frac{8 - 2}{15} = \frac{6}{15} = \frac{2}{5}$

$c) \: \frac{3}{2} - \frac{1}{4} = \frac{6 - 1}{4} = \frac{5}{4}$

$d) \: \frac{4}{5} + \frac{1}{2} - \frac{5}{8} = \frac{32 + 20 - 25}{40} = \frac{27}{40}$

Answer 2

ola

$\frac{7}{13} + \frac{2}{13} = \frac{7 + 2}{13} = \frac{9}{13}$

$\frac{8}{15} = \frac{2}{15} = \frac{8 - 2}{15} = \frac{6}{15} = \frac{2}{5}$

$\frac{3}{2} - \frac{1}{4} = \frac{3 \times 2}{2 \times 2} - \frac{1}{4} = \frac{6}{4} - \frac{1}{4} = \frac{6 - 1}{4} = \frac{5}{4}$

$\frac{4}{5} + \frac{1}{2} - \frac{5}{8} = \frac{13 + 20 - 25}{40} = \frac{27}{40}$

bons estudos