Question

ajuda em matemática!!!!​

Answer 1

a) 13/14

b)1/6

$\sf {\Huge ——————— }$

$\blue{\boxed{\sf \Large\frac{3}{7} + \frac{1}{2} } }$

MMC (2, 7) = 14

$\sf \blue{ \Large\frac{2\times 3}{14\div 7} + \frac{7 \times 1}{14\div 2} = \frac{6}{14} + \frac{7}{14} = \frac{13}{14} }$

$\pink{\boxed{\sf \Large \frac{4}{6} - \frac{2}{4}} }$

MMC (6, 4) = 12

$\sf \pink{\Large \frac{2\times 4}{12\div 6} - \frac{3\times 2}{12 \div 4} = \frac{8}{12} - \frac{6}{12} = \frac{2}{12} = \frac{1}{6}}$

Answer 2

Resposta:

a) $\frac{3}{7}$ + $\frac{1}{2}$ = $\frac{4}{9}$

b) $\frac{4}{6}$ - $\frac{2}{4}$ = $\frac{2}{2}$

Espero ter ajudado :-)