7(12-r)=-84

Simple and best practice solution for 7(12-r)=-84 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 7(12-r)=-84 equation:


Simplifying
7(12 + -1r) = -84
(12 * 7 + -1r * 7) = -84
(84 + -7r) = -84

Solving
84 + -7r = -84

Solving for variable 'r'.

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

Add '-84' to each side of the equation.
84 + -84 + -7r = -84 + -84

Combine like terms: 84 + -84 = 0
0 + -7r = -84 + -84
-7r = -84 + -84

Combine like terms: -84 + -84 = -168
-7r = -168

Divide each side by '-7'.
r = 24

Simplifying
r = 24

See similar equations:

| -(6y+3)-(5y-8)=4 | | 14+6x=17.5 | | 1.7q-1.4-1.9q=1.2q-2.5 | | =x^2+100x-2500 | | 11x+7-3=10x-4 | | x^2+14x+3= | | 2x+3y-2+3x+6y+7= | | 6x+9=45 | | 4r^2+4r-15= | | 10b-4b-b+b= | | -23x-12x^2=45 | | 2w^2+10w-168=0 | | 2w^2+10w-208=0 | | -8y+1=9y+9 | | 5m^2-9m+7m^2-2m=5m^2-7m^2+9m-2m | | x(3x-1)=0 | | 5x^4-3x^2+15x^2-9= | | x^2=14xy+24y^3 | | .80x-1=.20x+5 | | 3x^2-4x-12x+16= | | (-4+x)(1+y)(-6-z)= | | 16x^2+kx+9=0 | | 3x^2-27x=-3 | | 2y^3-5y^2-3y=0 | | 3x^2-27x+3=0 | | 3s^2-24s=0 | | 20x-15=5x+90 | | -x-2=0 | | 5v^2-36v-32=0 | | .43x+5=.71x-1 | | 8x^2+10x+9=0 | | 4x-12y= |

Equations solver categories