решите уравнение: (3/5-0,25)× х=4,9

(3/5-0,25)*х=4,9(0,6-0,25)*х=4,90,35х=4,9х=4,9:0,35х=14

(3/5 - 1/4)х = 4,9(12/20 - 5/20)х = 4,97/20х = 4,9х = 4 9/10 / 7/20х = 49/10 / 7/20х = 49/10 * 20/7х = 980/70х = 14