9(4r-8)=4(3r+12)

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Solution for 9(4r-8)=4(3r+12) equation:


Simplifying
9(4r + -8) = 4(3r + 12)

Reorder the terms:
9(-8 + 4r) = 4(3r + 12)
(-8 * 9 + 4r * 9) = 4(3r + 12)
(-72 + 36r) = 4(3r + 12)

Reorder the terms:
-72 + 36r = 4(12 + 3r)
-72 + 36r = (12 * 4 + 3r * 4)
-72 + 36r = (48 + 12r)

Solving
-72 + 36r = 48 + 12r

Solving for variable 'r'.

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

Add '-12r' to each side of the equation.
-72 + 36r + -12r = 48 + 12r + -12r

Combine like terms: 36r + -12r = 24r
-72 + 24r = 48 + 12r + -12r

Combine like terms: 12r + -12r = 0
-72 + 24r = 48 + 0
-72 + 24r = 48

Add '72' to each side of the equation.
-72 + 72 + 24r = 48 + 72

Combine like terms: -72 + 72 = 0
0 + 24r = 48 + 72
24r = 48 + 72

Combine like terms: 48 + 72 = 120
24r = 120

Divide each side by '24'.
r = 5

Simplifying
r = 5

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