Решите уравнение : 3/4x + 1/5x = 1целая 1/2+1целая 2/3
3/4x+1/5x=1×1/2+1×2/3 3/4x+1/5x=1/2+2/3 3/4x+1/5x=7/6 45x+12x=70 x=70/57