3r+7=9r+9

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Solution for 3r+7=9r+9 equation:


Simplifying
3r + 7 = 9r + 9

Reorder the terms:
7 + 3r = 9r + 9

Reorder the terms:
7 + 3r = 9 + 9r

Solving
7 + 3r = 9 + 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.
7 + 3r + -9r = 9 + 9r + -9r

Combine like terms: 3r + -9r = -6r
7 + -6r = 9 + 9r + -9r

Combine like terms: 9r + -9r = 0
7 + -6r = 9 + 0
7 + -6r = 9

Add '-7' to each side of the equation.
7 + -7 + -6r = 9 + -7

Combine like terms: 7 + -7 = 0
0 + -6r = 9 + -7
-6r = 9 + -7

Combine like terms: 9 + -7 = 2
-6r = 2

Divide each side by '-6'.
r = -0.3333333333

Simplifying
r = -0.3333333333

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