If it's not what You are looking for type in the equation solver your own equation and let us solve it.
21+5a=15+11
We move all terms to the left:
21+5a-(15+11)=0
We add all the numbers together, and all the variables
5a+21-26=0
We add all the numbers together, and all the variables
5a-5=0
We move all terms containing a to the left, all other terms to the right
5a=5
a=5/5
a=1
| 1.07^x=14 | | w/4-10=-22 | | 8x=305 | | 1/2x=-1/3x-5/3 | | 3x+23=516 | | 4x+2+3x+3=19 | | .06x-0.3=0.06+0.01 | | 13=3d=8 | | (n-2)180=32400 | | 9k+(-k)=-8 | | 5/8=n/64 | | 4(-3+2)x-5=2x+9-6 | | 6.1=2.6-0.6y | | x+5x+9+x=180 | | -6c-5=3-(c+6) | | (3x/8)+(x/6)=13 | | U-6c-5=3-(c+6) | | 8-x^2-4x=0 | | (x/2)-18=(-28) | | 130+2x+4=180 | | 3/7x+8=14 | | 7x-31=67 | | 9+2(×-5)+5x=3-(x+7)+7x | | x^2-16=3x | | 25/x=35/100 | | 8y-3=(5+2y) | | 125/6x-14x+1/6x=-x | | 12v=64 | | 24k=504 | | 17=5y-8 | | 17x+4(3-5x)=0 | | 16-5a+2a-1=42-a |