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Simplifying 7r + -15 = 12r + 8 Reorder the terms: -15 + 7r = 12r + 8 Reorder the terms: -15 + 7r = 8 + 12r Solving -15 + 7r = 8 + 12r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-12r' to each side of the equation. -15 + 7r + -12r = 8 + 12r + -12r Combine like terms: 7r + -12r = -5r -15 + -5r = 8 + 12r + -12r Combine like terms: 12r + -12r = 0 -15 + -5r = 8 + 0 -15 + -5r = 8 Add '15' to each side of the equation. -15 + 15 + -5r = 8 + 15 Combine like terms: -15 + 15 = 0 0 + -5r = 8 + 15 -5r = 8 + 15 Combine like terms: 8 + 15 = 23 -5r = 23 Divide each side by '-5'. r = -4.6 Simplifying r = -4.6
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