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Simplifying 5(2r + 3) + -3 = -8 Reorder the terms: 5(3 + 2r) + -3 = -8 (3 * 5 + 2r * 5) + -3 = -8 (15 + 10r) + -3 = -8 Reorder the terms: 15 + -3 + 10r = -8 Combine like terms: 15 + -3 = 12 12 + 10r = -8 Solving 12 + 10r = -8 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + 10r = -8 + -12 Combine like terms: 12 + -12 = 0 0 + 10r = -8 + -12 10r = -8 + -12 Combine like terms: -8 + -12 = -20 10r = -20 Divide each side by '10'. r = -2 Simplifying r = -2
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