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Simplifying 7 = 5r + -8 Reorder the terms: 7 = -8 + 5r Solving 7 = -8 + 5r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-5r' to each side of the equation. 7 + -5r = -8 + 5r + -5r Combine like terms: 5r + -5r = 0 7 + -5r = -8 + 0 7 + -5r = -8 Add '-7' to each side of the equation. 7 + -7 + -5r = -8 + -7 Combine like terms: 7 + -7 = 0 0 + -5r = -8 + -7 -5r = -8 + -7 Combine like terms: -8 + -7 = -15 -5r = -15 Divide each side by '-5'. r = 3 Simplifying r = 3
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