12(r-3)=6(r+3)

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Solution for 12(r-3)=6(r+3) equation:


Simplifying
12(r + -3) = 6(r + 3)

Reorder the terms:
12(-3 + r) = 6(r + 3)
(-3 * 12 + r * 12) = 6(r + 3)
(-36 + 12r) = 6(r + 3)

Reorder the terms:
-36 + 12r = 6(3 + r)
-36 + 12r = (3 * 6 + r * 6)
-36 + 12r = (18 + 6r)

Solving
-36 + 12r = 18 + 6r

Solving for variable 'r'.

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

Add '-6r' to each side of the equation.
-36 + 12r + -6r = 18 + 6r + -6r

Combine like terms: 12r + -6r = 6r
-36 + 6r = 18 + 6r + -6r

Combine like terms: 6r + -6r = 0
-36 + 6r = 18 + 0
-36 + 6r = 18

Add '36' to each side of the equation.
-36 + 36 + 6r = 18 + 36

Combine like terms: -36 + 36 = 0
0 + 6r = 18 + 36
6r = 18 + 36

Combine like terms: 18 + 36 = 54
6r = 54

Divide each side by '6'.
r = 9

Simplifying
r = 9

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