Question

5(x-1,5)=4.2/3x-8.3/14 решите уравнение даю 30 б

Answer 1

$5x - 7.5 = 4 frac{2}{3} x - 8 frac{3}{14} \ frac{2}{3} x - 1.5 = 0$
$frac{2}{3} x = 1.5 \ x = 1 frac{1}{2} div frac{2}{3}$
$x = frac{3}{2} times frac{3}{2} = frac{9}{4} = 2 frac{1}{2} = 2.5$

Answer 2

спс