Уравнение с дробями 1/3*x-1/4 = 75/100

1/3*x-1/4 = 75/100

1/3х=75/100+1/4

1/3х=1

х=1:1/3

х=3

Проверим: 1/3*3-1/4=75/100

                     1-1/4=75/100

                     3/4=3/4

                    75/100 сокращаем на 25=3/4