9r-9r+5r-4r=13

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Solution for 9r-9r+5r-4r=13 equation: 


Simplifying
9r + -9r + 5r + -4r = 13

Combine like terms: 9r + -9r = 0
0 + 5r + -4r = 13
5r + -4r = 13

Combine like terms: 5r + -4r = 1r
1r = 13

Solving
1r = 13

Solving for variable 'r'.

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

Divide each side by '1'.
r = 13

Simplifying
r = 13

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