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Simplifying 7r + -27 = -30 + 8r Reorder the terms: -27 + 7r = -30 + 8r Solving -27 + 7r = -30 + 8r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-8r' to each side of the equation. -27 + 7r + -8r = -30 + 8r + -8r Combine like terms: 7r + -8r = -1r -27 + -1r = -30 + 8r + -8r Combine like terms: 8r + -8r = 0 -27 + -1r = -30 + 0 -27 + -1r = -30 Add '27' to each side of the equation. -27 + 27 + -1r = -30 + 27 Combine like terms: -27 + 27 = 0 0 + -1r = -30 + 27 -1r = -30 + 27 Combine like terms: -30 + 27 = -3 -1r = -3 Divide each side by '-1'. r = 3 Simplifying r = 3
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