Question

como fazer a fração 3/4-2/5+3/6​

Answer 1

Olá!

$\frac{3}{4}-\frac{2}{5}+\frac{3}{6}\\\\=\frac{3}{4}-\frac{2}{5}+\frac{1}{2}\\\\=\frac{15}{20}-\frac{8}{20}+\frac{10}{20}\\\\\frac{15}{20}-\frac{8}{20}+\frac{10}{20}=\frac{15-8+10}{20}\\\\=\frac{15-8+10}{20}\\\\15-8+10=17\\\\=\frac{17}{20}$

Espero ter ajudado, tenha boas aulas!