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Simplifying 4r + -4 = 5 + 7r Reorder the terms: -4 + 4r = 5 + 7r Solving -4 + 4r = 5 + 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. -4 + 4r + -7r = 5 + 7r + -7r Combine like terms: 4r + -7r = -3r -4 + -3r = 5 + 7r + -7r Combine like terms: 7r + -7r = 0 -4 + -3r = 5 + 0 -4 + -3r = 5 Add '4' to each side of the equation. -4 + 4 + -3r = 5 + 4 Combine like terms: -4 + 4 = 0 0 + -3r = 5 + 4 -3r = 5 + 4 Combine like terms: 5 + 4 = 9 -3r = 9 Divide each side by '-3'. r = -3 Simplifying r = -3
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