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Simplifying 2r + -5 = 8r + 7 Reorder the terms: -5 + 2r = 8r + 7 Reorder the terms: -5 + 2r = 7 + 8r Solving -5 + 2r = 7 + 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. -5 + 2r + -8r = 7 + 8r + -8r Combine like terms: 2r + -8r = -6r -5 + -6r = 7 + 8r + -8r Combine like terms: 8r + -8r = 0 -5 + -6r = 7 + 0 -5 + -6r = 7 Add '5' to each side of the equation. -5 + 5 + -6r = 7 + 5 Combine like terms: -5 + 5 = 0 0 + -6r = 7 + 5 -6r = 7 + 5 Combine like terms: 7 + 5 = 12 -6r = 12 Divide each side by '-6'. r = -2 Simplifying r = -2
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