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Simplifying 9r + 7 = 4r + -4h Reorder the terms: 7 + 9r = 4r + -4h Reorder the terms: 7 + 9r = -4h + 4r Solving 7 + 9r = -4h + 4r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-4r' to each side of the equation. 7 + 9r + -4r = -4h + 4r + -4r Combine like terms: 9r + -4r = 5r 7 + 5r = -4h + 4r + -4r Combine like terms: 4r + -4r = 0 7 + 5r = -4h + 0 7 + 5r = -4h Add '-7' to each side of the equation. 7 + -7 + 5r = -7 + -4h Combine like terms: 7 + -7 = 0 0 + 5r = -7 + -4h 5r = -7 + -4h Divide each side by '5'. r = -1.4 + -0.8h Simplifying r = -1.4 + -0.8h
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