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Simplifying -4r + 7 = 63 Reorder the terms: 7 + -4r = 63 Solving 7 + -4r = 63 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -4r = 63 + -7 Combine like terms: 7 + -7 = 0 0 + -4r = 63 + -7 -4r = 63 + -7 Combine like terms: 63 + -7 = 56 -4r = 56 Divide each side by '-4'. r = -14 Simplifying r = -14
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