If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-4x+20-21=-1
We move all terms to the left:
-4x+20-21-(-1)=0
We add all the numbers together, and all the variables
-4x=0
x=0/-4
x=0
| x-4/5-x-5/2=x+2/10 | | 4x+25=17 | | -66=6x-63 | | 2x-72=80 | | 8g+4=65 | | 8g+4+×=65 | | 9/10=n/5 | | 1-12x²=6 | | -2x+3)=8 | | 5m²+3=0 | | 8a=5a-3 | | 17x-12=9x-4 | | 2/3(c-4)=6 | | 15+y/3=18 | | x^2-10/x-1=-14-5x/x-1 | | 6x-25=38-3x | | x2+30x-100=0 | | 3x^2−31x−2=20 | | a2-8a=-15 | | 6d²-24d-9=(4d-)² | | 6d²-24d-9= | | 90+38+3x=10x | | 3x(x+6)=-12 | | x2+22+121=0 | | -25y-35=-5(5y+7) | | 5n+5=3n+3/2 | | 2m=6m-10 | | w=8.06 | | (1/2)x+2x=0 | | T(2t+9)=–7 | | 1-s=s+5 | | 10n=-2n |