Question

ajuda me por favor eu tenho que entregar amanhã​

Answer 1

$a) \frac{3}{20} +\frac{12}{20} = \frac{12+3}{20} = \frac{15}{20} = \frac{3}{4}$

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

$c)\frac{3}{15} + \frac{1}{10} = \frac{30+15}{150} = \frac{45}{150} = \frac{3}{10}$

$d) \frac{82}{20} - \frac{12}{8} = \frac{656-240}{160} = \frac{416}{160} = \frac{13}{5}$

$e) \frac{6}{10}$ · $\frac{20}{8} = \frac{20.6}{10.8} = \frac{120}{80} = \frac{3}{2}$

$g) \frac{12}{15} : \frac{6}{5} = \frac{12}{15} . \frac{5}{6} = \frac{60}{90} =\frac{2}{3}$