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Simplifying 5r + -6 + -7r + 8 = 0 Reorder the terms: -6 + 8 + 5r + -7r = 0 Combine like terms: -6 + 8 = 2 2 + 5r + -7r = 0 Combine like terms: 5r + -7r = -2r 2 + -2r = 0 Solving 2 + -2r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -2r = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -2r = 0 + -2 -2r = 0 + -2 Combine like terms: 0 + -2 = -2 -2r = -2 Divide each side by '-2'. r = 1 Simplifying r = 1
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