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)
7/12 = x/36 // - x/36
7/12-(x/36) = 0
7/12-1/36*x = 0 // - 7/12
-1/36*x = -7/12 // : -1/36
x = -7/12/(-1/36)
x = 21
x = 21
| 23-2/7x=-2/7x+23 | | -6x^2+18x+29=0 | | x-(-5x)=1+x | | -2n+3n=-12 | | 3x^2-1=5 | | 2=2x/3+8 | | 1.4/3=x/7.5 | | -2a+6a=12 | | 3s-7=17+7s | | 4/5z+z=8 | | x^2+2=14 | | 2a+4b=d | | -2n+5n=12 | | m^2+5m+50=0 | | ab=6+cd | | -4m+2n=6 | | 7/9=x/17 | | 7b^2+13b-2=0 | | 4(2x+1)-7=26-3(-2x-5) | | 6-28x=2 | | 4-(w-3)+2(3w-5)=6 | | 1008=(x+6)(2x-8) | | -n+4n=15 | | 1/8y=5 | | 16y=3y+39 | | 4-(x-3)+2(3w-5)=6 | | (3x-6)(3x-6)=21 | | m+1.2=8.8 | | -7.4=(w/8)+5.4 | | M^2=12m+20 | | 4t-5=11t+6 | | 4x+31=7x+7 |