Решите пример c полным объяснением:(17 1/5*0,125-(2 32/45- 1 7/60))*(11/40:4 7/12 +2,64). Created by denmanorwat. algebra-ru

12 +2,64)...

denmanorwat @denmanorwat

August 2021 1 16 Report

Решите пример c полным объяснением:(17 1/5*0,125-(2 32/45- 1 7/60))*(11/40:4 7/12 +2,64)

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kalbim

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1) $17 \frac{1}{5}*0.125= \frac{86}{5}* \frac{1}{8}= \frac{86}{40}=\frac{43}{20}=2,15$
2) $2 \frac{32}{45}-1\frac{7}{60}= \frac{122}{45}-\frac{67}{60}=\frac{488-201}{180}=\frac{287}{180}$
3) $\frac{43}{20}-\frac{287}{180}=\frac{387-287}{180}=\frac{100}{180}=\frac{5}{9}$
4) $\frac{11}{40}:4\frac{7}{12}=\frac{11}{40}:\frac{55}{12}=\frac{11*12}{40*55}= \frac{12}{5*40}=\frac{3}{50}$
5) $\frac{3}{50}+2.64= \frac{3}{50}+ 2\frac{16}{25}= \frac{3}{50}+ \frac{66}{25}= \frac{3+132}{50}= \frac{135}{50}= \frac{27}{10}$
6) $\frac{5}{9}* \frac{27}{10}=\frac{5*27}{9*10}= \frac{15}{10}=\frac{3}{2}=1,5$

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