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OpenStudy (sarahc):
Given: x – (5 – 3x + 2) = 15 + 3x Prove: x = 22 x – (5 – 3x + 2) = 15 + 3x Given x – (5 + 2– 3x) = 15 + 3x x – (7– 3x) = 15 + 3x x – 7 + 3x = 15 + 3x x + 3x – 7 = 15 + 3x Commutative Property of Addition 4x – 7 = 15 + 3x Combine Like Terms x – 7 = 15 Subtraction Property of Equality x = 22 Addition Property of Equality
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