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Simplifying 4 + -2r + 2 = 28 Reorder the terms: 4 + 2 + -2r = 28 Combine like terms: 4 + 2 = 6 6 + -2r = 28 Solving 6 + -2r = 28 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -2r = 28 + -6 Combine like terms: 6 + -6 = 0 0 + -2r = 28 + -6 -2r = 28 + -6 Combine like terms: 28 + -6 = 22 -2r = 22 Divide each side by '-2'. r = -11 Simplifying r = -11
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