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*(1*a+10) = 66 // - 66
3*(1*a+10)-66 = 0
3*(a+10)-66 = 0
3*(a+10)-66 = 0
3*a-36 = 0
3*a-36 = 0
3*a-36 = 0 // + 36
3*a = 36 // : 3
a = 36/3
a = 12
a = 12
| -1.4x^2+x^2=-0.2x | | 7x-3=18+x | | 5(-1+3k)=160 | | 2(-2k+7)=10 | | 5(6t+4)=350 | | 2(2+6w)=148 | | 6(5b-4)=-24 | | 5(-10-2w)=-70 | | 36+8t=(t+4) | | -1.4x^2+n^2=-0.2x | | 50=2x-16 | | 5(4+7k)=-190 | | 6(5w-1)=264 | | 3(-1+7n)=165 | | 5X-30=3X | | M+12=2m+77 | | 9+5n-3-5n= | | 6(-5+5t)=300 | | 3(7+t)=-12 | | 5(-7+3m)=-5 | | 2(1b-8)=6 | | 6(10+5a)=150 | | 6(4n+10)=-180 | | 7(8+5a)=-49 | | 5(7+3d)=35 | | 5+3w=3+9w | | 3k+3-k+4k-3= | | 4/12 | | 2x-11=117 | | 64/8 | | 2(5x+6)=16 | | 5a+2b-2(4a-2b)= |