3r+13=9r-3

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


Simplifying
3r + 13 = 9r + -3

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

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

Solving
13 + 3r = -3 + 9r

Solving for variable 'r'.

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

Add '-9r' to each side of the equation.
13 + 3r + -9r = -3 + 9r + -9r

Combine like terms: 3r + -9r = -6r
13 + -6r = -3 + 9r + -9r

Combine like terms: 9r + -9r = 0
13 + -6r = -3 + 0
13 + -6r = -3

Add '-13' to each side of the equation.
13 + -13 + -6r = -3 + -13

Combine like terms: 13 + -13 = 0
0 + -6r = -3 + -13
-6r = -3 + -13

Combine like terms: -3 + -13 = -16
-6r = -16

Divide each side by '-6'.
r = 2.666666667

Simplifying
r = 2.666666667

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