4r+9r=39

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Solution for 4r+9r=39 equation: 


Simplifying
4r + 9r = 39

Combine like terms: 4r + 9r = 13r
13r = 39

Solving
13r = 39

Solving for variable 'r'.

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

Divide each side by '13'.
r = 3

Simplifying
r = 3

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