-9r-4=25

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Solution for -9r-4=25 equation: 


Simplifying
-9r + -4 = 25

Reorder the terms:
-4 + -9r = 25

Solving
-4 + -9r = 25

Solving for variable 'r'.

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

Add '4' to each side of the equation.
-4 + 4 + -9r = 25 + 4

Combine like terms: -4 + 4 = 0
0 + -9r = 25 + 4
-9r = 25 + 4

Combine like terms: 25 + 4 = 29
-9r = 29

Divide each side by '-9'.
r = -3.222222222

Simplifying
r = -3.222222222

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