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Simplifying 15r + 25 = 2(n + -7) Reorder the terms: 25 + 15r = 2(n + -7) Reorder the terms: 25 + 15r = 2(-7 + n) 25 + 15r = (-7 * 2 + n * 2) 25 + 15r = (-14 + 2n) Solving 25 + 15r = -14 + 2n Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-25' to each side of the equation. 25 + -25 + 15r = -14 + -25 + 2n Combine like terms: 25 + -25 = 0 0 + 15r = -14 + -25 + 2n 15r = -14 + -25 + 2n Combine like terms: -14 + -25 = -39 15r = -39 + 2n Divide each side by '15'. r = -2.6 + 0.1333333333n Simplifying r = -2.6 + 0.1333333333n
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