4(3r+9)=6(4r-12)

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Solution for 4(3r+9)=6(4r-12) equation:


Simplifying
4(3r + 9) = 6(4r + -12)

Reorder the terms:
4(9 + 3r) = 6(4r + -12)
(9 * 4 + 3r * 4) = 6(4r + -12)
(36 + 12r) = 6(4r + -12)

Reorder the terms:
36 + 12r = 6(-12 + 4r)
36 + 12r = (-12 * 6 + 4r * 6)
36 + 12r = (-72 + 24r)

Solving
36 + 12r = -72 + 24r

Solving for variable 'r'.

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

Add '-24r' to each side of the equation.
36 + 12r + -24r = -72 + 24r + -24r

Combine like terms: 12r + -24r = -12r
36 + -12r = -72 + 24r + -24r

Combine like terms: 24r + -24r = 0
36 + -12r = -72 + 0
36 + -12r = -72

Add '-36' to each side of the equation.
36 + -36 + -12r = -72 + -36

Combine like terms: 36 + -36 = 0
0 + -12r = -72 + -36
-12r = -72 + -36

Combine like terms: -72 + -36 = -108
-12r = -108

Divide each side by '-12'.
r = 9

Simplifying
r = 9

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