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Simplifying 7 + 8r = 7(8r + 1) Reorder the terms: 7 + 8r = 7(1 + 8r) 7 + 8r = (1 * 7 + 8r * 7) 7 + 8r = (7 + 56r) Add '-7' to each side of the equation. 7 + -7 + 8r = 7 + -7 + 56r Combine like terms: 7 + -7 = 0 0 + 8r = 7 + -7 + 56r 8r = 7 + -7 + 56r Combine like terms: 7 + -7 = 0 8r = 0 + 56r 8r = 56r Solving 8r = 56r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-56r' to each side of the equation. 8r + -56r = 56r + -56r Combine like terms: 8r + -56r = -48r -48r = 56r + -56r Combine like terms: 56r + -56r = 0 -48r = 0 Divide each side by '-48'. r = 0 Simplifying r = 0
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