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Simplifying -4(r + 3) + 6r = -30 Reorder the terms: -4(3 + r) + 6r = -30 (3 * -4 + r * -4) + 6r = -30 (-12 + -4r) + 6r = -30 Combine like terms: -4r + 6r = 2r -12 + 2r = -30 Solving -12 + 2r = -30 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + 2r = -30 + 12 Combine like terms: -12 + 12 = 0 0 + 2r = -30 + 12 2r = -30 + 12 Combine like terms: -30 + 12 = -18 2r = -18 Divide each side by '2'. r = -9 Simplifying r = -9
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