Question

7целых 3/5 - x =2целых2/3
x * 1 целую 5/7 = 4целая 1/7

Answer 1

$displaystyle7frac{3}{5} -x=2frac{2}{3}$

$displaystyle x=7frac{3}{5}-2frac{2}{3}$

$displaystyle x=frac{38}{5}-frac{8}{3}$

$displaystyle x=frac{3*38}{3*5}-frac{5*8}{5*3}$

$displaystyle x=frac{114}{15}-frac{40}{15}$

$displaystyle x=frac{74}{15}$

$displaystyle x =4frac{14}{15}$

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$displaystyle x*1frac{5}{7}=4frac{1}{7}$

$displaystyle x=4frac{1}{7}:1frac{5}{7}$

$displaystyle x=frac{29}{7} :frac{12}{7}$

$displaystyle x=frac{29}{7}*frac{7}{12}$

$displaystyle x=frac{203}{84}$

$displaystyle x=2frac{5}{12}$