(5r+9)-(5r+9)=

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Solution for (5r+9)-(5r+9)= equation: 


Simplifying
(5r + 9) + -1(5r + 9) = 0

Reorder the terms:
(9 + 5r) + -1(5r + 9) = 0

Remove parenthesis around (9 + 5r)
9 + 5r + -1(5r + 9) = 0

Reorder the terms:
9 + 5r + -1(9 + 5r) = 0
9 + 5r + (9 * -1 + 5r * -1) = 0
9 + 5r + (-9 + -5r) = 0

Reorder the terms:
9 + -9 + 5r + -5r = 0

Combine like terms: 9 + -9 = 0
0 + 5r + -5r = 0
5r + -5r = 0

Combine like terms: 5r + -5r = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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