-15=7r+5r

Simple and best practice solution for -15=7r+5r 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 -15=7r+5r equation:


Simplifying
-15 = 7r + 5r

Combine like terms: 7r + 5r = 12r
-15 = 12r

Solving
-15 = 12r

Solving for variable 'r'.

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

Add '-12r' to each side of the equation.
-15 + -12r = 12r + -12r

Combine like terms: 12r + -12r = 0
-15 + -12r = 0

Add '15' to each side of the equation.
-15 + 15 + -12r = 0 + 15

Combine like terms: -15 + 15 = 0
0 + -12r = 0 + 15
-12r = 0 + 15

Combine like terms: 0 + 15 = 15
-12r = 15

Divide each side by '-12'.
r = -1.25

Simplifying
r = -1.25

See similar equations:

| 4w-56=20 | | 6x-384/x^20 | | -7x+3(4x+12)=-24 | | (-7)(2/7x)(-3) | | 8x-20=6x+7 | | 2d+60=5d | | 11/20-3/8 | | 9n^2+67n+28=0 | | 3.52+a=8.2 | | 15x=115 | | 9x^2-6x-19=0 | | 18+x=54 | | 32=-8(x+2) | | 5x=-95 | | 15x+25-12x-5=3+3x | | 125=1.94x+3.40 | | 30=-3(7n+2) | | 1575/21 | | y=1.94x+3.40 | | 3/1/3=-1/2g | | (21/3x5 | | 29=k/5 | | 4x+6x-29=3(x-5) | | 4-20x=20x+15 | | 15=-16t^2+40t+3 | | 0.25x+9.25=59.50 | | -2cos^2x-5sinx=10 | | 2y=6x+-6 | | 19a-8=115 | | .2x-x=15 | | 3x+5=2(4x+20) | | 12v-8v=-58 |

Equations solver categories