-9(3-r)=36

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Solution for -9(3-r)=36 equation: 


Simplifying
-9(3 + -1r) = 36
(3 * -9 + -1r * -9) = 36
(-27 + 9r) = 36

Solving
-27 + 9r = 36

Solving for variable 'r'.

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

Add '27' to each side of the equation.
-27 + 27 + 9r = 36 + 27

Combine like terms: -27 + 27 = 0
0 + 9r = 36 + 27
9r = 36 + 27

Combine like terms: 36 + 27 = 63
9r = 63

Divide each side by '9'.
r = 7

Simplifying
r = 7

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