Question

Уравнения с дробями, помогите
-3/4x=-6/7;
X/5=4
-2целые 1/3х=7
1целая2/3х=2целые 1/3
3,5х=2целые1/3

Answer 1

$1) - frac{3}{4} x = - frac{6}{7} \ x = - frac{6}{7} times ( - frac{4}{3} ) = frac{24}{21 } = frac{8}{7 } \ 2) frac{x}{5} = 4 \ x = 20$
$3) - 2 frac{1}{ 3 } x = 7 \ - frac{7}{3} x = 7 \ x = - 3$
$4)1 frac{2}{3} x = 2 frac{1}{3} \ frac{5}{3} x = frac{7}{3} \ x = frac{7}{ 3} times frac{3}{5} = frac{21}{15} = frac{7}{5}$
$5)3.5x = 2 frac{1}{3 } \ frac{35}{10} x = frac{7}{3} \ frac{7}{2} x = frac{7}{3} \ x = frac{7}{3} times frac{2}{7} = frac{14}{21} = frac{2}{3}$

Answer 2

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