9-3r=15

Simple and best practice solution for 9-3r=15 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 9-3r=15 equation: 


Simplifying
9 + -3r = 15

Solving
9 + -3r = 15

Solving for variable 'r'.

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

Add '-9' to each side of the equation.
9 + -9 + -3r = 15 + -9

Combine like terms: 9 + -9 = 0
0 + -3r = 15 + -9
-3r = 15 + -9

Combine like terms: 15 + -9 = 6
-3r = 6

Divide each side by '-3'.
r = -2

Simplifying
r = -2

See similar equations:

| w^3-7w^2=8w | | 8x-8=9x | | 2v^3-2v^3x^4=0 | | 67.75-a=34.81 | | 8x+5=2x+1 | | 13s+s^2+30=0 | | 10d-(5d+8)=42 | | -3x+15=6 | | 14a^2=2a | | 8a-(5a+2)=16 | | 5z^2-7z-6=0 | | [4x]-12=4 | | 4x+5y=48 | | -[6-9a]=16 | | 20y^2+13y+2=0 | | lnx=6 | | [3a]=30 | | 5m-2(m-5)=1 | | 5x^2-10=3 | | [16x]=32 | | 7=21+x | | 6(2h+3)-2h=28 | | 2x^2-8=33 | | z=11+3(x+y) | | [5t-7]=11 | | 3.65+e=-10.74 | | 5b+4=2b+6 | | 5x-17=-x+17 | | 8-4x=x-10 | | -[4-8a]=16 | | 7x+7y=61.25 | | 2.55c=-19.89 |

Equations solver categories