Question

найдите корень уравнения ( х\5 ) -2 = (х-86)/25

Answer 1

$\frac{x}{5} -2= \frac{x-86}{25} \\ \frac{x-10}{5} = \frac{x-86}{25} \\ (x-10)*25=(x-86)*5 \\ 25x-250=5x-430 \\ 20x=-180 \\ x=-9$

Answer 2

(х/5) - 2 = (х - 86) / 25
(х - 10) / 5 = (х -86)) / 25
25(х - 10) = 5(х - 86)
25х - 250 = 5х - 430
25х - 5х = 250 - 430
20х = - 180
х = - 180 : 20
х = - 9