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/6-21 = -1/10 // + -1/10
x/6-(-1/10)-21 = 0
x/6+1/10-21 = 0
1/6*x-209/10 = 0 // + 209/10
1/6*x = 209/10 // : 1/6
x = 209/10/1/6
x = 627/5
x = 627/5
| 75-2x=34x+23 | | n^2=8n+4 | | 7s+3s=30 | | z/7=-11 | | 4n-3=2n+27 | | x^2+10-3=4 | | 4x^2+6x+9=1 | | 3n+14=5n+1 | | 75+2k=100-2k | | 14k-53=187+4k | | 2.2q-2.5-4.6q=-3.4q-1.2 | | 9x+3=5x+13 | | 5y+10=10x+1 | | 32h=6.4 | | -6y+9=-7y+1 | | 8x^2-48+104=0 | | 1/2x-6=2x-42 | | 1/2=c/c-5 | | 2x+15=54 | | 0.6t=60 | | z-16=-36 | | 30h=15 | | 7.5=3y | | 5-2(x+8)=6x+7 | | 1.16y=y+4+1 | | 139-4x=32x+23 | | 18=(5/9)B-32 | | 25x^2+35x+12= | | 5-10x=13-7x | | 13*5+8-x=87 | | 8/35x-13/25x | | 3xy=y+1 |