If it's not what You are looking for type in the equation solver your own equation and let us solve it.
a in (-oo:+oo)
3*a = 12/11 // - 12/11
3*a-(12/11) = 0
3*a-12/11 = 0
3*a-12/11 = 0 // + 12/11
3*a = 12/11 // : 3
a = 12/11/3
a = 4/11
a = 4/11
| n+3=14 | | w/2=-5 | | 4/7a=0 | | -37/5=k-2/5 | | d-2/5=-62/5 | | 9+m=18 | | -1+x=0 | | m+7=-2 | | 7/8+m=15/8 | | 4=m+1 | | 11=t+6 | | b-4/5=-47/40 | | 7+w=63/8 | | d+1/3=29/33 | | -2/9=t-2/3 | | -3/7a=0 | | -7/9+b=-16/9 | | 450*x=1350 | | -9/5=k-1 | | -76/11=n-7 | | a-2=-16/7 | | w-3/4=-1/28 | | b/4=5 | | m+8=77/9 | | k-7/8=-103/8 | | d/3=-2 | | -97/10=d+3/10 | | w-1=0 | | m+5/7=33/7 | | 48/x | | n+1=6 | | t+1/4=-3/4 |