If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
x-3 = 4 // - 4
x-4-3 = 0
x-7 = 0 // + 7
x = 7
x = 7
| 6=n-2 | | 4=m-8 | | b+4=-6 | | d+8=18 | | n/5=-4 | | 7+d=19 | | m/7=-5 | | -8+a=2 | | -7=n+3 | | t=rf | | -7n=-42 | | k-5=-10 | | a/-4=-6 | | 2+a=6 | | b/3=-2 | | x/-4=-6 | | 7w=-77 | | 4+n=12 | | x+(x+2)=23 | | b+1=-11 | | b+1=12 | | b/3=-4 | | 81/7+(-41/10) | | k-3=7 | | w+5=-7 | | w/-6=-6 | | m+10=11 | | 3k=0 | | m/-6=-6 | | -2=a+3 | | d+9=0 | | t+6=13 |