Question

dau coroana.ex 6.7. este fff urgent​

Answer 1

Răspuns:

$6.\\a)\: 5:\frac{1}{3}=5\times3=15$

$b)\:9:\frac{3}{5}=\not{9}\times\frac{5}{\not{3}}=3\times5=15$

$c)\: 11:\frac{1}{4} =11\times\frac{4}{1}=44$

$d)\:\frac{23}{4}:5=\frac{23}{4} \times\frac{1}{5}=\frac{23}{20}$

$e)\:\frac{56}{3} :70=\frac{56}{3} \times\frac{1}{70}=\frac{4}{3}\times\frac{1}{5}=\frac{4}{15}$

$f)\:\frac{28}{5}:21=\frac{28}{5} \times\frac{1}{21}=\frac{4}{5}\times\frac{1}{3}=\frac{4}{15}$

$7.\\a)\:\frac{36}{25}:\frac{4}{5}:\frac{3}{5}=\frac{\not{36}}{\not{25}}\times\frac{\not5}{\not4} \times\frac{5}{3}=\frac{\not9}{\not5}\times\frac{\not5}{\not3}=3\times1=3$

$b)\:\frac{84}{11}:\frac{7}{3}:6=\frac{\not84}{11}\times\frac{\not3}{\not7}\times\frac{1}{\not6}=\frac{\not12}{11}\times\frac{1}{\not2}=\frac{6}{11}$

$c)\:\frac{54}{35}:\frac{2}{7}:\frac{3}{5}=\frac{\not54}{\not35}\times\frac{\not7}{\not2}\times\frac{5}{3}=\frac{\not27}{\not5}\times\frac{\not5}{\not3}=9$

$d)\:\frac{72}{7} :\frac{8}{21}:\frac{3}{2}=\frac{\not72}{\not7}\times\frac{\not21}{\not8}\times\frac{2}{3}=9\times\not3\times\frac{2}{\not3}=9\times2=18$

$e)\:\frac{48}{5}:\frac{3}{10}:\frac{8}{3}=\frac{\not48}{\not5}\times\frac{\not10}{\not3}\times\frac{\not3}{\not8}=6\times2=12$

$f)\:\frac{120}{49}:\frac{3}{7} :\frac{10}{21}=\frac{\not1\not2\not0}{\not4\not9}\times\frac{\not7}{\not3}\times\frac{21}{10}=\frac{\not40}{\not7}\times\frac{\not21}{\not10}=4\times3=12$