-173=-9r+7

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Solution for -173=-9r+7 equation:


Simplifying
-173 = -9r + 7

Reorder the terms:
-173 = 7 + -9r

Solving
-173 = 7 + -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.
-173 + 9r = 7 + -9r + 9r

Combine like terms: -9r + 9r = 0
-173 + 9r = 7 + 0
-173 + 9r = 7

Add '173' to each side of the equation.
-173 + 173 + 9r = 7 + 173

Combine like terms: -173 + 173 = 0
0 + 9r = 7 + 173
9r = 7 + 173

Combine like terms: 7 + 173 = 180
9r = 180

Divide each side by '9'.
r = 20

Simplifying
r = 20

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