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Simplifying 3(-8r + 8) + -3 = -147 Reorder the terms: 3(8 + -8r) + -3 = -147 (8 * 3 + -8r * 3) + -3 = -147 (24 + -24r) + -3 = -147 Reorder the terms: 24 + -3 + -24r = -147 Combine like terms: 24 + -3 = 21 21 + -24r = -147 Solving 21 + -24r = -147 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + -24r = -147 + -21 Combine like terms: 21 + -21 = 0 0 + -24r = -147 + -21 -24r = -147 + -21 Combine like terms: -147 + -21 = -168 -24r = -168 Divide each side by '-24'. r = 7 Simplifying r = 7
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