5r-9r=20

Simple and best practice solution for 5r-9r=20 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 5r-9r=20 equation: 


Simplifying
5r + -9r = 20

Combine like terms: 5r + -9r = -4r
-4r = 20

Solving
-4r = 20

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Divide each side by '-4'.
r = -5

Simplifying
r = -5

See similar equations:

| 5x-7y=21 | | -18=4z | | 8r^2-30r+18=0 | | -2+3x=x+7 | | -2x+3x=x+7 | | 9X-10=-10+5X | | -10=6z | | -4n+13=-3n-4 | | 15y=14(y+14) | | 15-5x=-5(x-3) | | (-4+5)-(7-8)= | | 0.3(x+15)+0.4(x+15)=25 | | 3X+8=9X-3 | | x+(x+1)+(x+2)=132 | | 18+4f=7f-3 | | 5y+4y=-72 | | 2w+5+w=2(3w+3) | | p=i*r*t | | 4x^2+16x+15= | | 2x-z=f | | 7M+30=14 | | -3u=-12+u | | 3+2a-7x+2.5+5x= | | -3t=24 | | -2x+8=5c-10 | | 10y-3c+5-8-2y= | | m^3+m=0 | | 0.5x-1.7=0.3x | | 5x-4=2+5x+4x | | 8-(7z+5)=15-6z | | x^2+25-81=0 | | 2/3=x+3/4 |

Equations solver categories