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Simplifying -76 + -7r = 12r + 57 Reorder the terms: -76 + -7r = 57 + 12r Solving -76 + -7r = 57 + 12r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-12r' to each side of the equation. -76 + -7r + -12r = 57 + 12r + -12r Combine like terms: -7r + -12r = -19r -76 + -19r = 57 + 12r + -12r Combine like terms: 12r + -12r = 0 -76 + -19r = 57 + 0 -76 + -19r = 57 Add '76' to each side of the equation. -76 + 76 + -19r = 57 + 76 Combine like terms: -76 + 76 = 0 0 + -19r = 57 + 76 -19r = 57 + 76 Combine like terms: 57 + 76 = 133 -19r = 133 Divide each side by '-19'. r = -7 Simplifying r = -7
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