7r-36=2r+9

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Solution for 7r-36=2r+9 equation:


Simplifying
7r + -36 = 2r + 9

Reorder the terms:
-36 + 7r = 2r + 9

Reorder the terms:
-36 + 7r = 9 + 2r

Solving
-36 + 7r = 9 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
-36 + 7r + -2r = 9 + 2r + -2r

Combine like terms: 7r + -2r = 5r
-36 + 5r = 9 + 2r + -2r

Combine like terms: 2r + -2r = 0
-36 + 5r = 9 + 0
-36 + 5r = 9

Add '36' to each side of the equation.
-36 + 36 + 5r = 9 + 36

Combine like terms: -36 + 36 = 0
0 + 5r = 9 + 36
5r = 9 + 36

Combine like terms: 9 + 36 = 45
5r = 45

Divide each side by '5'.
r = 9

Simplifying
r = 9

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