4(3r-9)=36

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Solution for 4(3r-9)=36 equation:


Simplifying
4(3r + -9) = 36

Reorder the terms:
4(-9 + 3r) = 36
(-9 * 4 + 3r * 4) = 36
(-36 + 12r) = 36

Solving
-36 + 12r = 36

Solving for variable 'r'.

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

Add '36' to each side of the equation.
-36 + 36 + 12r = 36 + 36

Combine like terms: -36 + 36 = 0
0 + 12r = 36 + 36
12r = 36 + 36

Combine like terms: 36 + 36 = 72
12r = 72

Divide each side by '12'.
r = 6

Simplifying
r = 6

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