Question

x+7,9x=3,6

Answer 1

х+7,9х=3,6

8,9х=3,6

х=3,6:8,9

х=36/89

Answer 2

$x+7,9x=3,6$

$8,9x=3,6$

$x=3,6:8,9$

$x=3frac{6}{10}:8frac{9}{10}=3frac{3}{5}:8frac{9}{10}=frac{18}{5}:frac{89}{10}=frac{18}{5}cdotfrac{10}{89}=frac{36}{89}$