12r-9-3r=-3(r-9)

Simple and best practice solution for 12r-9-3r=-3(r-9) 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 12r-9-3r=-3(r-9) equation:


Simplifying
12r + -9 + -3r = -3(r + -9)

Reorder the terms:
-9 + 12r + -3r = -3(r + -9)

Combine like terms: 12r + -3r = 9r
-9 + 9r = -3(r + -9)

Reorder the terms:
-9 + 9r = -3(-9 + r)
-9 + 9r = (-9 * -3 + r * -3)
-9 + 9r = (27 + -3r)

Solving
-9 + 9r = 27 + -3r

Solving for variable 'r'.

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

Add '3r' to each side of the equation.
-9 + 9r + 3r = 27 + -3r + 3r

Combine like terms: 9r + 3r = 12r
-9 + 12r = 27 + -3r + 3r

Combine like terms: -3r + 3r = 0
-9 + 12r = 27 + 0
-9 + 12r = 27

Add '9' to each side of the equation.
-9 + 9 + 12r = 27 + 9

Combine like terms: -9 + 9 = 0
0 + 12r = 27 + 9
12r = 27 + 9

Combine like terms: 27 + 9 = 36
12r = 36

Divide each side by '12'.
r = 3

Simplifying
r = 3

See similar equations:

| 7(2p+3)-8=6p+37 | | -(1/3)^4 | | 5/12+y=11/12 | | 7d-13=3d+15 | | (-4/5)^3 | | 3x+5/4=-16 | | -3/5^2 | | 8-4(2x-10)+10x=18 | | e^4x=-2 | | (-1/3)^2 | | 1/7(14-7p)-2(1/2p+3)+6 | | -3=12-5m | | -4x+6.5-4.7x-2.7x+4= | | -4=4-2m | | 1/3(-9r)= | | 9c+7c-8-2= | | 7.8x+9=60.84+3x | | 9+4+2c+5c= | | (-64)^(-2/3) | | 6(x-2)+68=-2xd | | f(x)=-4x-6 | | (512)^(-4/3) | | 25-x/4+=49 | | -7-12=9x+18-8x | | 3a+4+8a-2= | | (216)^(-4/3) | | y=x^2+11x+24 | | y=x^2+11+24 | | 17p-10q+7p= | | 3x^2+12x-5= | | 132-2x=43x+17 | | 2x^2+16x=o |

Equations solver categories