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)
7-(3*a) = 2*a+62 // - 2*a+62
7-(3*a)-(2*a)-62 = 0
7-3*a-2*a-62 = 0
-5*a-55 = 0 // + 55
-5*a = 55 // : -5
a = 55/(-5)
a = -11
a = -11
| 6m+8=-69-5m | | -2d-8=7d-98 | | k-5=-k+9 | | -3n+4=53+4n | | 2a-10=-7a+98 | | 2w+2=-18-2w | | -3-7d=6d+75 | | 3d+3=2d-9 | | 8+2x=-4x+14 | | 10+5b=-5b-10 | | 7b+5=9+5b | | 3x+6=4x-5 | | 4a-2=-6a+38 | | -9+4d=2d+11 | | 10+5b=2b+31 | | -2x-8=-14+4x | | -5m-3=-4m-11 | | -4d-2=4+2d | | -4-6t=6t+32 | | -5+x=6x-55 | | 6n+10=5n+15 | | 2b+1=-5b+71 | | 7d-3=3d-47 | | 5b-10=-4b+35 | | 8-5b=-4b+18 | | 2-7a=-a-70 | | 6w-3=-w+67 | | -5a+8=2a+50 | | -10+3w=-6w-100 | | 4w+10=-w+45 | | 7w+7=3w-25 | | -6n-10=-3n-28 |