Question

(4 7_15-3 14_25):(4_5)

Answer 1

$\mathtt{\bold{(4 \dfrac{7}{15}-3 \dfrac{14}{25}):\dfrac{4}{5} = 1\dfrac{4}{30}}}\\ \\ \\\\\mathtt{1) \ \dfrac{15\cdot4+7}{15}-\dfrac{25\cdot3+14}{25} \ = \ \dfrac{67}{15}-\dfrac{89}{25} \ = \ \dfrac{67\cdot5}{75}-\dfrac{89\cdot3}{75} \ = \ \dfrac{335}{75}-\dfrac{267}{75} \ = \ \dfrac{68}{75}}\\\\\\\mathtt{2) \ \dfrac{68}{75}:\dfrac{4}{5} \ = \ \dfrac{68}{75}\cdot\dfrac{5}{4} \ = \ \dfrac{340}{300} \ = \ \dfrac{34}{30} \ = \ 1 \dfrac{4}{30}}$

$\mathtt{\bold{OTBET:1\dfrac{4}{30}}}$