Question

dau coroana
$(53 \frac{2}{3} - 22 \frac{14}{15} \div 2 \frac{2}{3} ) \div (20 \frac{1}{15} + 25 \frac{5}{7} \div 1 \frac{1}{35} ) =$
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Answer 1

Răspuns:

$(53\frac{2}{3}-22\frac{14}{15}$÷$2\frac{2}{3}$)÷($20\frac{1}{15}+25\frac{5}{7}$÷$1\frac{1}{35}$) = ($\frac{161}{3}-\frac{344}{15}$÷$\frac{8}{3}$) ÷

÷ $\frac{301}{15}+\frac{180}{7}$÷$\frac{36}{35}$ =

= $(\frac{161}{3}-\frac{344}{15}$•$\frac{3}{8}$)÷($\frac{301}{15}+\frac{180}{7}$•$\frac{35}{36})$ = $(\frac{161}{3}-\frac{1032}{120}):(\frac{301}{15}+\frac{6300}{252}) = (\frac{6440}{120}-\frac{1032}{120}):(\frac{25284}{1260}+\frac{31500}{1260}) = \frac{5408}{120}:\frac{56784}{1260}=\frac{5408}{120}$•$\frac{1260}{56784}=\frac{6814080}{151200}$