x-5/6=1/9 x=5/6+1/9=15/18+2/18=17/18 x+1/4=4/5 x=4/5-1/4=16/20-5/20=11/203x-x=0.9 2x=0.9 x=0.452/7+x=3/4 x=3/4-2/7=21/28-8/28=13/28y-2/5=3/4 y=3/4+2/5=15/20+8/20=23/204y-2y=1.2 2y=1.2 y=0.6