Răspuns:
4x=1/2+6/12
4x=6/12+6/12
4x=12/12
4x=1
x=1/4
x=0,25
4x-6/12=1/2
4x-1/2=1/2
4x=1/2+1/2
1/2+1/2=(1+1)/2=2/2=1
x=1:4=1/4