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Simplifying 15r + -8 = -10 + -7r Reorder the terms: -8 + 15r = -10 + -7r Solving -8 + 15r = -10 + -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. -8 + 15r + 7r = -10 + -7r + 7r Combine like terms: 15r + 7r = 22r -8 + 22r = -10 + -7r + 7r Combine like terms: -7r + 7r = 0 -8 + 22r = -10 + 0 -8 + 22r = -10 Add '8' to each side of the equation. -8 + 8 + 22r = -10 + 8 Combine like terms: -8 + 8 = 0 0 + 22r = -10 + 8 22r = -10 + 8 Combine like terms: -10 + 8 = -2 22r = -2 Divide each side by '22'. r = -0.09090909091 Simplifying r = -0.09090909091
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