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)
6-(5*a) = 66 // - 66
6-(5*a)-66 = 0
6-5*a-66 = 0
-5*a-60 = 0 // + 60
-5*a = 60 // : -5
a = 60/(-5)
a = -12
a = -12
| 19+3(2n-10)=1 | | 5a+3/5=-72/5 | | -1/2+7b=7/2 | | -7a-4=-8 | | 2n+2/7=114/7 | | 3d-4=5 | | 4/5+5a=-96/5 | | 6-2k=-16 | | x^4-x^2+30=0 | | 5/7d-1/3=83/21 | | 3/4b+3/8=21/8 | | m+6/7=25/21 | | 3w-5=10 | | 2/3t+2/3=0 | | 6(w-2)=12 | | 15x+x-16+8=6x-13+21 | | 1/9-5/7a=56/99 | | 3n+2/3=-1/3 | | 2n-5=-19 | | -2/3m+1/3=-1/9 | | -2/5+5/6n=-49/60 | | 4a-4/5=-184/5 | | 8-6/7d=51/7 | | -3/5m-3/4=-19/20 | | 4/5-3d=-7/10 | | 4/5+4d=32/15 | | 9x-2=-5(x+1)-11 | | 5x+1/5=-199/5 | | -x+1/2=-21/2 | | 6-7n=23/12 | | -1/3n+5=161/33 | | 5-6m=-43 |