-8r-9=7r+66

Simple and best practice solution for -8r-9=7r+66 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 -8r-9=7r+66 equation:


Simplifying
-8r + -9 = 7r + 66

Reorder the terms:
-9 + -8r = 7r + 66

Reorder the terms:
-9 + -8r = 66 + 7r

Solving
-9 + -8r = 66 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
-9 + -8r + -7r = 66 + 7r + -7r

Combine like terms: -8r + -7r = -15r
-9 + -15r = 66 + 7r + -7r

Combine like terms: 7r + -7r = 0
-9 + -15r = 66 + 0
-9 + -15r = 66

Add '9' to each side of the equation.
-9 + 9 + -15r = 66 + 9

Combine like terms: -9 + 9 = 0
0 + -15r = 66 + 9
-15r = 66 + 9

Combine like terms: 66 + 9 = 75
-15r = 75

Divide each side by '-15'.
r = -5

Simplifying
r = -5

See similar equations:

| 6x-30=6x+9 | | 3x+1-6x=-2 | | -9x-10y=11 | | -16-(-1/2)= | | 16-1/2= | | 2x-10y-8y+9x+5= | | 0.75+0.60+0.25+(-0.20)= | | 2x-2=3x-13 | | a(y-4)-7y=5(3y-2) | | -1x-1y=-1 | | -(2/5)u=-14 | | 3/13x=-12/11 | | -20y+8x=100 | | 2(x-5)+9=2x+7 | | 9y-23=13+5y | | 2x+50=x-10 | | 4(w+1)=2(3w-3) | | 7n-29=-27+9n | | 6x-10y-3y+7x+8= | | -5n=72+3n | | r^2+8r=20 | | 3x-75=525 | | 112-34=78 | | Y=f(x)-3 | | 6x-18y=54 | | 0=16x+32 | | 6y-6=12y+18 | | -7(m+2)=-2m-2-4m | | 434/63 | | f(x)=30*0.2(5) | | {7/2y-1}=6 | | p(x)=16x-.1x^2+16x-2 |

Equations solver categories