r=(3x)(x+8)

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Solution for r=(3x)(x+8) equation: 


Simplifying
r = (3x)(x + 8)

Remove parenthesis around (3x)
r = 3x(x + 8)

Reorder the terms:
r = 3x(8 + x)
r = (8 * 3x + x * 3x)
r = (24x + 3x2)

Solving
r = 24x + 3x2

Solving for variable 'r'.

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

Simplifying
r = 24x + 3x2

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