-9r-9=8r+25

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Solution for -9r-9=8r+25 equation:


Simplifying
-9r + -9 = 8r + 25

Reorder the terms:
-9 + -9r = 8r + 25

Reorder the terms:
-9 + -9r = 25 + 8r

Solving
-9 + -9r = 25 + 8r

Solving for variable 'r'.

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

Add '-8r' to each side of the equation.
-9 + -9r + -8r = 25 + 8r + -8r

Combine like terms: -9r + -8r = -17r
-9 + -17r = 25 + 8r + -8r

Combine like terms: 8r + -8r = 0
-9 + -17r = 25 + 0
-9 + -17r = 25

Add '9' to each side of the equation.
-9 + 9 + -17r = 25 + 9

Combine like terms: -9 + 9 = 0
0 + -17r = 25 + 9
-17r = 25 + 9

Combine like terms: 25 + 9 = 34
-17r = 34

Divide each side by '-17'.
r = -2

Simplifying
r = -2

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