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ДАЮ 25 БАЛЛОВ СРОЧНО ПОЖАЛУЙСТА!!!!!

Answer 1

Ответ:

$\frac{\frac{3}{8}+\frac{1}{12}+\frac{1}{6} }{\frac{1}{12}+\frac{1}{3} +\frac{5}{6} } = \frac{\frac{9+2+4}{24} }{\frac{2+8+20}{24} } =\frac{\frac{15}{24} }{\frac{30}{24} } = \frac{15}{24}*\frac{24}{30}=\frac{1}{2} = 0,5$

$\frac{\frac{2}{3}-\frac{1}{6}-\frac{4}{9} }{\frac{7}{9}-\frac{5}{12}-\frac{5}{18} } =\frac{\frac{24-6-16}{36} }{\frac{28-15-10}{36} }=\frac{\frac{2}{36} }{\frac{3}{36} }=\frac{2}{36}*\frac{36}{3}= \frac{2}{3}$

$\frac{2\frac{1}{4}*1\frac{1}{3}*\frac{8}{9} }{1\frac{1}{5} *\frac{4}{9}* 2\frac{1}{2} } =\frac{\frac{9}{4}*\frac{4}{3}*\frac{8}{9} }{\frac{6}{5}*\frac{4}{9}* \frac{5}{2} } =\frac{\frac{9*4*8}{4*3*9} }{\frac{6*4*5}{5*9*2} } = \frac{\frac{288}{108} }{\frac{120}{90} }=\frac{288}{108}*\frac{90}{120}= \frac{12}{12}*\frac{10}{10}=\frac{120}{120} =1$