Найдите корень уравнения 4/7x=7 3/7*4/7x=7 3/7
4/7x=7
x = 7 : 4/7 = 49/4 = 12 1/4
3/7*4/7x=7 3/7
3/7*4/7x= 52/7
3/7x = 13
x = 13 : 3/7 = 91/3 = 30 1/3