Question

. Решите уравнение пжлст
x/12+x/6+x=-8(целых) 3/4

Answer 1

$frac{x}{12} + frac{x}{6} + x = - 8 frac{3}{4}$
$frac{x}{12} + frac{x*2}{12} + x = - frac{24}{4}$
$frac{x}{12} + frac{x*2}{12} +x =- frac{72}{12}$
$frac{x}{12} + frac{x*2}{12} + frac{x}{1} =- frac{72}{12}$
$frac{x+ 2x+x}{12} = - frac{72}{12}$
$frac{4x}{12} = - frac{72}{12}$
$frac{4x}{12} = - 6$
$4x = -6*12$
$4x = -72$
$x = - frac{72}{4}$
$x = 18$