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Simplifying 4r + -16 = 8r Reorder the terms: -16 + 4r = 8r Solving -16 + 4r = 8r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-8r' to each side of the equation. -16 + 4r + -8r = 8r + -8r Combine like terms: 4r + -8r = -4r -16 + -4r = 8r + -8r Combine like terms: 8r + -8r = 0 -16 + -4r = 0 Add '16' to each side of the equation. -16 + 16 + -4r = 0 + 16 Combine like terms: -16 + 16 = 0 0 + -4r = 0 + 16 -4r = 0 + 16 Combine like terms: 0 + 16 = 16 -4r = 16 Divide each side by '-4'. r = -4 Simplifying r = -4
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