r=8-(-4)

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Solution for r=8-(-4) equation: 


Simplifying
r = 8 + -1(-4)

Multiply -1 * -4
r = 8 + 4

Combine like terms: 8 + 4 = 12
r = 12

Solving
r = 12

Solving for variable 'r'.

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

Simplifying
r = 12

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