1) 7x/6-5x/18=4/27 2) 2x/7+x/4=15/14 3)- x/8+1= x/12

1) 7х/6 - 5х/18 = 4/2721х/18 - 5х/18 = 4/2716х/18 = 4/2716х=(18*4)/2716х=72/27х=18/27=6/9=2/32)2х/7 + х/4 = 15/148х/28 + 7х/28 = 15/1415х/28 = 15/1415х = (28*15)/14х = 28/14 = 23)-х/8+1=х/12х/8+х/12=13х/24+2х/24=15х/24=15х=24х=24/5=4,8