80(r)=-30(100)

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Solution for 80(r)=-30(100) equation: 


Simplifying
80(r) = -30(100)

Multiply -30 * 100
80r = -3000

Solving
80r = -3000

Solving for variable 'r'.

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

Divide each side by '80'.
r = -37.5

Simplifying
r = -37.5

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