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Simplifying 9r + 7 = 19r + 12 Reorder the terms: 7 + 9r = 19r + 12 Reorder the terms: 7 + 9r = 12 + 19r Solving 7 + 9r = 12 + 19r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-19r' to each side of the equation. 7 + 9r + -19r = 12 + 19r + -19r Combine like terms: 9r + -19r = -10r 7 + -10r = 12 + 19r + -19r Combine like terms: 19r + -19r = 0 7 + -10r = 12 + 0 7 + -10r = 12 Add '-7' to each side of the equation. 7 + -7 + -10r = 12 + -7 Combine like terms: 7 + -7 = 0 0 + -10r = 12 + -7 -10r = 12 + -7 Combine like terms: 12 + -7 = 5 -10r = 5 Divide each side by '-10'. r = -0.5 Simplifying r = -0.5
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