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Simplifying 11r + -142 = 13r + -17 Reorder the terms: -142 + 11r = 13r + -17 Reorder the terms: -142 + 11r = -17 + 13r Solving -142 + 11r = -17 + 13r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-13r' to each side of the equation. -142 + 11r + -13r = -17 + 13r + -13r Combine like terms: 11r + -13r = -2r -142 + -2r = -17 + 13r + -13r Combine like terms: 13r + -13r = 0 -142 + -2r = -17 + 0 -142 + -2r = -17 Add '142' to each side of the equation. -142 + 142 + -2r = -17 + 142 Combine like terms: -142 + 142 = 0 0 + -2r = -17 + 142 -2r = -17 + 142 Combine like terms: -17 + 142 = 125 -2r = 125 Divide each side by '-2'. r = -62.5 Simplifying r = -62.5
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