13r-9r-8=3

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Solution for 13r-9r-8=3 equation:


Simplifying
13r + -9r + -8 = 3

Reorder the terms:
-8 + 13r + -9r = 3

Combine like terms: 13r + -9r = 4r
-8 + 4r = 3

Solving
-8 + 4r = 3

Solving for variable 'r'.

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

Add '8' to each side of the equation.
-8 + 8 + 4r = 3 + 8

Combine like terms: -8 + 8 = 0
0 + 4r = 3 + 8
4r = 3 + 8

Combine like terms: 3 + 8 = 11
4r = 11

Divide each side by '4'.
r = 2.75

Simplifying
r = 2.75

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