Question

(1/2+2/3)÷5/6-12×(1/2-2/3) решите

Answer 1

($frac{1}{2}$+$frac{2}{3}$)÷$frac{5}{6}$-12×($frac{1}{2}$ - $frac{2}{3}$) = ($frac{3}{6}$ + $frac{4}{6}$)÷$frac{5}{6}$-12($frac{3}{6}$ - $frac{4}{6}$) = $frac{7}{6}$ ÷ $frac{5}{6}$ - 12×-$frac{1}{6}$=$frac{7}{5}$--$frac{12}{6}$=1$frac{2}{5}$+2=3$frac{2}{5}$