Question

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1 2/3-3,6):(-2 7/9 +4 1/5)*(-2,,6)-4,1

Answer 1

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Вот решение)
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Answer 2

$1) 1frac{2}{3} -3,6=-(3,6- 1frac{2}{3})=-(3frac{6}{10}-1frac{2}{3})=-(3frac{3}{5}^{(3}-1frac{2}{3}^{(5})= \ \ =-(3frac{9}{15}-1frac{10}{15})=-(2frac{24}{15}-1frac{10}{15})=-1frac{14}{15} \ \ 2) -2frac{7}{9}+4frac{1}{5}=4frac{1}{5}^{(9}-2frac{7}{9}^{(5}=4frac{9}{45}-2frac{35}{45}=3frac{54}{45}- 2frac{35}{45}=1frac{19}{45}\ \ 3) -1frac{14}{15}:1frac{19}{45}=-frac{29}{15}:frac{64}{45}= -frac{29}{15}cdotfrac{45}{64}=-frac{87}{64}=-1frac{23}{64}$

$4)-1frac{23}{64}cdot (-2,6)=1frac{23}{64}cdot2,6=frac{87}{64}cdot2frac{6}{10}= frac{87}{64}cdot2frac{3}{5}=frac{87}{64}cdotfrac{13}{5}=\\=frac{1131}{320} =3frac{171}{320} \ \ 5)3frac{171}{320} -4,1=-(4,1-3frac{171}{320})=-(4frac{1}{10}^{(32}-3frac{171}{320}) =- (4frac{32}{320}-3frac{171}{320}) =\ \ =- (3frac{352}{320}-3frac{171}{320})=- frac{181}{320}$

Ответ: $- frac{181}{320}$