3r+9=4r-6

Simple and best practice solution for 3r+9=4r-6 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 3r+9=4r-6 equation:


Simplifying
3r + 9 = 4r + -6

Reorder the terms:
9 + 3r = 4r + -6

Reorder the terms:
9 + 3r = -6 + 4r

Solving
9 + 3r = -6 + 4r

Solving for variable 'r'.

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

Add '-4r' to each side of the equation.
9 + 3r + -4r = -6 + 4r + -4r

Combine like terms: 3r + -4r = -1r
9 + -1r = -6 + 4r + -4r

Combine like terms: 4r + -4r = 0
9 + -1r = -6 + 0
9 + -1r = -6

Add '-9' to each side of the equation.
9 + -9 + -1r = -6 + -9

Combine like terms: 9 + -9 = 0
0 + -1r = -6 + -9
-1r = -6 + -9

Combine like terms: -6 + -9 = -15
-1r = -15

Divide each side by '-1'.
r = 15

Simplifying
r = 15

See similar equations:

| 3(85-y)+2y=190 | | 1.3a-12=4.3a+6 | | 0.5x+14=27 | | 6x=.6 | | 4b^2=326 | | 2x+7=6-1 | | 4x=3300 | | 1/2(32-x)=12 | | n/3-8=-5 | | x^2+1=243 | | X^4+2x^2=3x^3 | | 33x=37 | | xsquared=360000 | | -4x^2+4x+4=0 | | 65-5=16 | | x+14=200 | | o=5-4-1 | | a+413=556 | | 10a-5=35 | | F(X)=3x^2-21x | | 56=2x+2y+6 | | 2v+4=12 | | 6x^2+24-30x=0 | | -8+5v=-33 | | 17=34 | | x=-3+-0.3333333333y | | -6x-8=32 | | 21=6+5v | | 125x^(1/3)-25x^(-2/3) | | x+40+2x=180 | | 9.5=2.16+6x | | 44=x |

Equations solver categories