1-2x+1/4+2x+1/3=10x+1/12
1+1/4+1/3=10x+1/12
1+3/12+4/12=10x+1/12
1+7/12=10x+1/12
1+7/12-1/12=10x
1+1/2=10x
3/2=10x
3/20=x