Question

Me ajudem nesse daqui dou 10 pontos!!!

Answer 1

$\frac{2}{5}+ \frac{1}{6} + \frac{5}{2}= \frac{12+5+75}{30} = \frac{92}{30} = \frac{46}{15} \\ \frac{7}{8}+ \frac{1}{10}= \frac{35+4}{40} = \frac{39}{40} \\ \frac{3}{4}+ \frac{3}{10}+ \frac{1}{2}= \frac{15+6+10}{20}= \frac{31 \\ }{20} \\ \frac{3}{4} + \frac{1}{2}- \frac{5}{6} = \frac{9+6-10}{12}= \frac{5}{12}$