If it's not what You are looking for type in the equation solver your own equation and let us solve it.
13=r/18
We move all terms to the left:
13-(r/18)=0
We add all the numbers together, and all the variables
-(+r/18)+13=0
We get rid of parentheses
-r/18+13=0
We multiply all the terms by the denominator
-r+13*18=0
We add all the numbers together, and all the variables
-1r+234=0
We move all terms containing r to the left, all other terms to the right
-r=-234
r=-234/-1
r=+234
| (5/10)x=20 | | 8x-10=4x-3 | | X+(4x+1)=79 | | 3(-x+2)+4=31 | | 17(k+9)=9(k-5)-14k | | 5v-4/10=0.8 | | 6(-4+2x)=-84 | | X+5/2=4x/3 | | -5y=-85= | | 8^-x+16=32^x | | 2(n+8)=-8 | | x^2+13x-30=9 | | 2x-4+6x+40=180 | | 12v=7v+20 | | 7x-3=8x+24 | | 3g+3=8g−2 | | x^2+13x-33=9 | | -9−6v=-5v | | 2x-1-2x-2/2=3x+1/5+x+1/4 | | 150=15x5 | | 4(x^2-2)=4x^2+2x+6 | | -66=-6(1v+5) | | 4g=6+5g | | 16x-13=24 | | (64+6)÷(5x)=2 | | 4x+5=2x×21 | | 2x-1-2x-2/2=3x=1/5+x+1/4 | | 12-4b=-5b+5 | | 56-r=64 | | 5(6n+2)=-38+6n | | 9x+18=6x+18 | | 13+5x+2x=4x+4 |