If it's not what You are looking for type in the equation solver your own equation and let us solve it.
2r-5r=-9
We move all terms to the left:
2r-5r-(-9)=0
We add all the numbers together, and all the variables
-3r+9=0
We move all terms containing r to the left, all other terms to the right
-3r=-9
r=-9/-3
r=+3
| x+32^7x=90 | | -5m+6m=-5 | | (X+4)/(-3)=6-x(x+4)/3 | | 7^(4x-5)=343 | | 13=20-a | | (5=1.9x+3-0.9x) | | 3x+6(x-5=-48 | | y=-3(9)+20 | | (5m+4)=12=-3 | | 24=15+x | | 5(b-4)=10b×4 | | 3x*2+48x=0 | | 25^(7)=5^(3x-7) | | 7=4+x2 | | y=-6(9)-85 | | -76=4+4v | | 3(8x-6)+9=63 | | -1=1+x6 | | 12x-12x=19x-228 | | 4x+8x-54=36-6x | | 7a+2a=9-2a | | 34.86=12.51+5x | | 3n+6=-3 | | 3x+-6=x+2 | | 3(3n+4)=4n-3+15+5n | | (2a+1)/3=a+5(2a+1)/3 | | 2x-24=x+15 | | (5m+4)=+12=-3 | | 9h-11h+2.4=17.6 | | –6b+–15=–57 | | 20-(2y-6)=10 | | 7=w-32/5 |