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