39=12r-3(9-r)

Simple and best practice solution for 39=12r-3(9-r) 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 39=12r-3(9-r) equation: 


Simplifying
39 = 12r + -3(9 + -1r)
39 = 12r + (9 * -3 + -1r * -3)
39 = 12r + (-27 + 3r)

Reorder the terms:
39 = -27 + 12r + 3r

Combine like terms: 12r + 3r = 15r
39 = -27 + 15r

Solving
39 = -27 + 15r

Solving for variable 'r'.

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

Add '-15r' to each side of the equation.
39 + -15r = -27 + 15r + -15r

Combine like terms: 15r + -15r = 0
39 + -15r = -27 + 0
39 + -15r = -27

Add '-39' to each side of the equation.
39 + -39 + -15r = -27 + -39

Combine like terms: 39 + -39 = 0
0 + -15r = -27 + -39
-15r = -27 + -39

Combine like terms: -27 + -39 = -66
-15r = -66

Divide each side by '-15'.
r = 4.4

Simplifying
r = 4.4

See similar equations:

| 8a-5=75 | | 10s^2+27s-28=0 | | 6=-24M | | 2(n+7)=(4n+8) | | 38.65=8g+3.69 | | 21*a=9*21 | | 3x-153=54-6x | | 7x-6=3x-7 | | C=1.24x+28 | | 8-26= | | 8K-6+3K-2K+3=132 | | 16t-8=50 | | -9x+31=94 | | 29=a-7 | | (g^2)+(g-6)=0 | | x^2-13x=-75 | | 2gt-10=4 | | 4x-4=15+3X | | 5[(12+5)-3(19-14)]= | | 110x^2+30x^6+60x^8= | | 2x+-138=5(6x+6) | | (4x+9)+(3x+5)=17 | | 7(8x-3)-x=-187 | | 6x+5(-x+15)=83 | | 5x-12=-7-8(8x-8) | | 50=2x*24 | | Ax-5.07=6c | | 3t-8=13 | | 2.5m+8=40 | | Lcm= | | 15(a)+12(a)+30= | | 3p+6-6=12 |

Equations solver categories