-5+8r+r=13

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Solution for -5+8r+r=13 equation:


Simplifying
-5 + 8r + r = 13

Combine like terms: 8r + r = 9r
-5 + 9r = 13

Solving
-5 + 9r = 13

Solving for variable 'r'.

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

Add '5' to each side of the equation.
-5 + 5 + 9r = 13 + 5

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

Combine like terms: 13 + 5 = 18
9r = 18

Divide each side by '9'.
r = 2

Simplifying
r = 2

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