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Simplifying 7r + -2 = -2 + 3r Reorder the terms: -2 + 7r = -2 + 3r Add '2' to each side of the equation. -2 + 2 + 7r = -2 + 2 + 3r Combine like terms: -2 + 2 = 0 0 + 7r = -2 + 2 + 3r 7r = -2 + 2 + 3r Combine like terms: -2 + 2 = 0 7r = 0 + 3r 7r = 3r Solving 7r = 3r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3r' to each side of the equation. 7r + -3r = 3r + -3r Combine like terms: 7r + -3r = 4r 4r = 3r + -3r Combine like terms: 3r + -3r = 0 4r = 0 Divide each side by '4'. r = 0 Simplifying r = 0
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