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Simplifying 7r + -5 = 7 + 3r Reorder the terms: -5 + 7r = 7 + 3r Solving -5 + 7r = 7 + 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. -5 + 7r + -3r = 7 + 3r + -3r Combine like terms: 7r + -3r = 4r -5 + 4r = 7 + 3r + -3r Combine like terms: 3r + -3r = 0 -5 + 4r = 7 + 0 -5 + 4r = 7 Add '5' to each side of the equation. -5 + 5 + 4r = 7 + 5 Combine like terms: -5 + 5 = 0 0 + 4r = 7 + 5 4r = 7 + 5 Combine like terms: 7 + 5 = 12 4r = 12 Divide each side by '4'. r = 3 Simplifying r = 3
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