Question

Помогите, пожалуйста.

Answer 1

$(2frac{3}{4}+2frac{1}{5})cdot 16=(frac{11}{4}+frac{11}{5})cdot 16=frac{5cdot 11+4cdot 11}{4cdot 5}cdot 16=\\=frac{11cdot (5+4)}{5}cdot 4=frac{11cdot 9}{5}cdot 4=frac{99cdot 4}{5}=frac{396}{5}=79,2$

Answer 2

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$(2 frac{3}{4} + 2 frac{1}{5} ) times 16 = ( frac{11}{4} + frac{11}{5} ) times 6 = \ \ = frac{(55 + 44)}{20} times 16 = frac{99}{20} times 16 = \ \ = frac{99}{5} times 4 = frac{396}{5} = 79 frac{1}{5}$
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Готово.
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