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Simplifying 7 = -3r + 8 + -2r Reorder the terms: 7 = 8 + -3r + -2r Combine like terms: -3r + -2r = -5r 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 = 1 5r = 1 Divide each side by '5'. r = 0.2 Simplifying r = 0.2
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