If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-3a+21=a
We simplify the equation to the form, which is simple to understand
-3a+21=a
We move all terms containing a to the left and all other terms to the right.
-3a-1a=-21
We simplify left and right side of the equation.
-4a=-21
We divide both sides of the equation by -4 to get a.
a=5.25
| 48-3x=15x+20 | | 5x-3=2x+27 | | 4(2x+5)=2x+2(x-5)+2(x+15)+2x | | 3x+8.1=-2x+13.9 | | 3x+(-4)=19 | | exp(x)=-1 | | 8x=5x+120 | | 4x+6=50-10x | | -x+13.68=22.52+x | | c=c | | 3x+5-2=5 | | 15-4=-22 | | -6-2+1= | | c=c^2 | | c+1+2=3 | | -2x+4=-2+x | | 17-3n= | | 3(2w+8)=60 | | 3+4x=12+6x | | 17-(4m+4)=2+2m-19 | | -7x^6-14x^5+245x^4= | | 36x^2+2.44948974278x-1=0 | | 5x-2=3x-14 | | 10y+1=3(-2y-5) | | 3(z-21)=39-3(z-2) | | 36x^2+2.44948974278-1=0 | | 7w=4w+24 | | 120-3x=15x+18 | | 12f-4=7+f | | a^2-6af-27f^2= | | 7y^3+14y^2=0 | | 3x+1=-x+21 |