If it's not what You are looking for type in the equation solver your own equation and let us solve it.
r+13=99
We move all terms to the left:
r+13-(99)=0
We add all the numbers together, and all the variables
r-86=0
We move all terms containing r to the left, all other terms to the right
r=86
| 0.12(y-9)+0.16y=0.18y-0.1 | | h+23=99 | | 6=b−79 | | w+41=63 | | (x2+5x+4)–(2x2–3x+6)=… | | 4^3x+2=3^5x-4 | | 5y=30y= | | 25x+225=300 | | 25x+225=300x | | x=125/343 | | 4x+-4x=1 | | x3=125/343 | | 2x+6x.3x+4x= | | k+42=-1 | | 75=-5j | | 66=b+29 | | 89=z+41 | | 0=x^2+16x-14 | | 3/4(4x+8)=—12 | | -42=-2q | | 92=n-78 | | 9x-12=-17 | | 66=2m | | 3÷4=96^(n-1) | | t+-314=-943 | | 3h=828 | | r-14=234= | | 3x+4x=101 | | 52=y-10 | | 40=5.x+-15 | | -9=-2m+5÷4 | | 2x+16=-x-11 |