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Simplifying 28 + -16r = -28 + -8r Solving 28 + -16r = -28 + -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. 28 + -16r + 8r = -28 + -8r + 8r Combine like terms: -16r + 8r = -8r 28 + -8r = -28 + -8r + 8r Combine like terms: -8r + 8r = 0 28 + -8r = -28 + 0 28 + -8r = -28 Add '-28' to each side of the equation. 28 + -28 + -8r = -28 + -28 Combine like terms: 28 + -28 = 0 0 + -8r = -28 + -28 -8r = -28 + -28 Combine like terms: -28 + -28 = -56 -8r = -56 Divide each side by '-8'. r = 7 Simplifying r = 7
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