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Simplifying -6r + 30 + -4r = -30 Reorder the terms: 30 + -6r + -4r = -30 Combine like terms: -6r + -4r = -10r 30 + -10r = -30 Solving 30 + -10r = -30 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + -10r = -30 + -30 Combine like terms: 30 + -30 = 0 0 + -10r = -30 + -30 -10r = -30 + -30 Combine like terms: -30 + -30 = -60 -10r = -60 Divide each side by '-10'. r = 6 Simplifying r = 6
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