Question

${x frac{2}{3} }$ - 25 = 0, Решите уравнение? 

Answer 1

$frac{2}{3}x-25=0\\ frac{2x}{3}=25\\ 2x=75\\ x= frac{75}{2}\\ x= 37,5$

Проверка:

$frac{2}{3}* frac{75}{2}-25=0\\ 25-25=0\\ 0=0$

Answer 2

х*2/3=25; х=25:2/3; х=75/2.
75/2*2/3-25=0.