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Simplifying 5r + -25 = -39 + 7r Reorder the terms: -25 + 5r = -39 + 7r Solving -25 + 5r = -39 + 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. -25 + 5r + -7r = -39 + 7r + -7r Combine like terms: 5r + -7r = -2r -25 + -2r = -39 + 7r + -7r Combine like terms: 7r + -7r = 0 -25 + -2r = -39 + 0 -25 + -2r = -39 Add '25' to each side of the equation. -25 + 25 + -2r = -39 + 25 Combine like terms: -25 + 25 = 0 0 + -2r = -39 + 25 -2r = -39 + 25 Combine like terms: -39 + 25 = -14 -2r = -14 Divide each side by '-2'. r = 7 Simplifying r = 7
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