R=(12-.1x)(1000+20x)

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Solution for R=(12-.1x)(1000+20x) equation: 


Simplifying
R = (12 + -0.1x)(1000 + 20x)

Multiply (12 + -0.1x) * (1000 + 20x)
R = (12(1000 + 20x) + -0.1x * (1000 + 20x))
R = ((1000 * 12 + 20x * 12) + -0.1x * (1000 + 20x))
R = ((12000 + 240x) + -0.1x * (1000 + 20x))
R = (12000 + 240x + (1000 * -0.1x + 20x * -0.1x))
R = (12000 + 240x + (-100x + -2x2))

Combine like terms: 240x + -100x = 140x
R = (12000 + 140x + -2x2)

Solving
R = 12000 + 140x + -2x2

Solving for variable 'R'.

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

Simplifying
R = 12000 + 140x + -2x2

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