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Simplifying 2(r + -3) + 10 = 4 Reorder the terms: 2(-3 + r) + 10 = 4 (-3 * 2 + r * 2) + 10 = 4 (-6 + 2r) + 10 = 4 Reorder the terms: -6 + 10 + 2r = 4 Combine like terms: -6 + 10 = 4 4 + 2r = 4 Add '-4' to each side of the equation. 4 + -4 + 2r = 4 + -4 Combine like terms: 4 + -4 = 0 0 + 2r = 4 + -4 2r = 4 + -4 Combine like terms: 4 + -4 = 0 2r = 0 Solving 2r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Divide each side by '2'. r = 0 Simplifying r = 0
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