a) $\frac{1}{2}$ + $\frac{5}{6}$ x $\frac{12}{15}$ =
= $\frac{1}{2}$ + $\frac{2}{3}$
= $\frac{7}{6}$
b) $\frac{8}{3}$ - $\frac{1}{2}$ : $\frac{5}{6}$ =
= $\frac{8}{3}$ - $\frac{3}{5}$
= $\frac{31}{15}$
c) $\frac{3}{4}$ x 2 + $\frac{4}{12}$ + $\frac{4}{5}$ : $\frac{12}{25}$ x $\frac{1}{2}$
= $\frac{3}{2}$ + $\frac{4}{12}$ + ( $\frac{4}{5}$ : $\frac{12}{25}$ x $\frac{1}{2}$ )
= $\frac{3}{2}$ + $\frac{4}{12}$ + $\frac{5}{6 }$
= $\frac{8}{3}$
Để chiều mai mik hoàn thành nốt nha !
