Question

(X+3)/5=(2x-1)/12
Должно получиться 20,5 вроде

Answer 1

$frac{x + 3}{5} = frac{2x - 1}{12}$

Умножить уравнение на 60

$frac{60(x + 3)}{5} = frac{60(2x - 1)}{12} \ 12(x + 3) = 5(2x - 1) \ 12x + 36 = 10x - 5 \ 12x - 10x = - 5 - 36 \ 2x = - 41 \ x = - 41 div 2 \ x = - 20.5$

Answer 2

$frac{x + 3}{5} = frac{2x - 1}{12} \ 12(x + 3) = 5(2x - 1) \ 12x + 36 = 10x - 5 \ 12x - 10x = - 36 - 5 \ 2x = - 41 \ x = frac{ - 41}{2} \ x = - 20.5$