Решите уравнения: а) 4/15 : х = 2/5 б)2/15у + 3/4=5/6 в)5/8m - 7/12m + 5/6m = 1/4

4/15:х=2/5х=4/15:2/5х=4/15*5/2х=2/3Ответ:2/32/1у+3/4=5/62/15у=5/6-3/42/15у=1/12у=1/12:2/15у=1/12*15/2у=5/8Ответ:5/85/8m-7/12m+5/6m=1/42 1/24m=1/4m=1/4:2 1/24m=1/4*24/49m=6/49Ответ:6/49