Question

6 класс,кто сможет?Пожалуйста
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Answer 1

Ответ:

Пошаговое объяснение:

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Answer 2

Ответ:

1 1/6

Пошаговое объяснение:

1. $2\frac{2}{7} *2\frac{4}{10} = \frac{2*7+2}{7} * \frac{2*10+4}{10} = \frac{16}{7} *\frac{24}{10}= \frac{16*24}{7*10}=\frac{384}{70} =\frac{192}{35} = 5 \frac{17}{35}$

2. $1\frac{5}{9} *5\frac{17}{35}=\frac{1*9+5}{9}*\frac{5*35+17}{35}=\frac{14}{9}* \frac{192}{35} =\frac{14*192}{9*35} =\frac{2688}{315} = \frac{128}{15} = 8\frac{8}{15}$

3. $8\frac{8}{15} *1\frac{9}{16} = \frac{8*15+8}{15} *\frac{1*16+9}{16} = \frac{128}{15} * \frac{25}{16} = \frac{128*25}{15*16} = \frac{3200}{240}=\frac{40}{3} =13\frac{1}{3}$

4.$3\frac{1}{3} * 1\frac{125}{1000} = \frac{3*3+1}{3}*\frac{1*1000+125}{1000} =\frac{10}{3}*\frac{1125}{1000} = \frac{10*1125}{3*1000} = \frac{11250}{3000} = \frac{15}{4}=3\frac{3}{4}$

5.$3\frac{3}{4} *1\frac{5}{7} =$$\frac{3*4+3}{4} *\frac{1*7+5}{7} = \frac{15}{4} * \frac{12}{7} = \frac{15*12}{4*7} = \frac{180}{28}= \frac{45}{7}= 6\frac{3}{7}$

6. $\frac{45}{7} *\frac{16}{9} = \frac{5*16}{7} =\frac{80}{7}$

7. $\frac{40}{3} : \frac{80}{7} = \frac{40}{3} * \frac{7}{80} = \frac{7}{6} = 1\frac{1}{6}$