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Simplifying 8r + -7 = -2 + 7r Reorder the terms: -7 + 8r = -2 + 7r Solving -7 + 8r = -2 + 7r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-7r' to each side of the equation. -7 + 8r + -7r = -2 + 7r + -7r Combine like terms: 8r + -7r = 1r -7 + 1r = -2 + 7r + -7r Combine like terms: 7r + -7r = 0 -7 + 1r = -2 + 0 -7 + 1r = -2 Add '7' to each side of the equation. -7 + 7 + 1r = -2 + 7 Combine like terms: -7 + 7 = 0 0 + 1r = -2 + 7 1r = -2 + 7 Combine like terms: -2 + 7 = 5 1r = 5 Divide each side by '1'. r = 5 Simplifying r = 5
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