1/2*x+3/4=7/6*x-5/8
1/2*x-7/6*x=-3/4-5/8
(3-7)/6*x=(-6-5)/8
-2/3*x=-11/8
x=11/8:2/3=11/8*3/2=33/16=2 1/16
2/3-1/6*x=7/12*x-5/8
-1/6*x-7/12*x=-5/8-2/3
(-2-7)/12*x=(-15-16)/24
-3/4*x=-31/24
x=31/24:3/4=31/24*4/3=31/18=1 13/18
1/5*x+9/10=1/5-3/10*x
1/5*x+3/10*x=1/5-9/10
(2+3)/10*x=(2-9)/10
1/2*x=-7/10
x=-7/10:1/2=-7/10*2=-7/5=-1,4