If it's not what You are looking for type in the equation solver your own equation and let us solve it.
19-r=10
We move all terms to the left:
19-r-(10)=0
We add all the numbers together, and all the variables
-1r+9=0
We move all terms containing r to the left, all other terms to the right
-r=-9
r=-9/-1
r=+9
| 5(-10-7x)=-295 | | Y=5x^2-20x+22 | | 78+2p+5+p+20=180 | | 2x+15=3x+x | | 0.429a+19=10 | | -9z-(-5z)=12 | | 5(-10-7x=-295 | | 6n=4n+12 | | 2y+20+y+14+82=180 | | 6p-3p-1=14 | | -34x+23=40 | | 4-(3x-5)=6-(2x+7)= | | 9n-5=-77 | | 2x-20+3x+3x=180 | | 12n^2=-6-9n | | -3x-1=3x+8 | | 2e=-10e-16 | | 47-3x=107 | | 6y-3+2y=8y+7-10 | | -3x-1=3x=8 | | -3x+2+6=6-3x | | 3a-48+3a+20+2a=180 | | X(X+1)+25x=1 | | 3z+10+3z+18+z+19=180 | | 25-n/4=-18 | | -(y²-2)=y²-5-2y² | | z-5+2z+2z-15=180 | | 3t-12+(4-t)7=84 | | -50+x=-11 | | 2(2x-8)+4x=24 | | 1x+3x+3x-7x+2x=16 | | 60p+36p^2=-25 |