8r+11=12+9r

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Solution for 8r+11=12+9r equation:


Simplifying
8r + 11 = 12 + 9r

Reorder the terms:
11 + 8r = 12 + 9r

Solving
11 + 8r = 12 + 9r

Solving for variable 'r'.

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

Add '-9r' to each side of the equation.
11 + 8r + -9r = 12 + 9r + -9r

Combine like terms: 8r + -9r = -1r
11 + -1r = 12 + 9r + -9r

Combine like terms: 9r + -9r = 0
11 + -1r = 12 + 0
11 + -1r = 12

Add '-11' to each side of the equation.
11 + -11 + -1r = 12 + -11

Combine like terms: 11 + -11 = 0
0 + -1r = 12 + -11
-1r = 12 + -11

Combine like terms: 12 + -11 = 1
-1r = 1

Divide each side by '-1'.
r = -1

Simplifying
r = -1

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