Resposta :
Se a equação tem raiz...
x+1/3-2x+1/4=0
-x+7/12=0
Logo... x=7/12, pois
-(7/12)+7/12+0
-7/12+7/12=0
0=0.
x=7/12
x+1/3-2x+1/4=0
-x+7/12=0
Logo... x=7/12, pois
-(7/12)+7/12+0
-7/12+7/12=0
0=0.
x=7/12