13r-11=28

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Solution for 13r-11=28 equation: 


Simplifying
13r + -11 = 28

Reorder the terms:
-11 + 13r = 28

Solving
-11 + 13r = 28

Solving for variable 'r'.

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

Add '11' to each side of the equation.
-11 + 11 + 13r = 28 + 11

Combine like terms: -11 + 11 = 0
0 + 13r = 28 + 11
13r = 28 + 11

Combine like terms: 28 + 11 = 39
13r = 39

Divide each side by '13'.
r = 3

Simplifying
r = 3

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