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OpenStudy (anonymous):
1. Sheldon simplifies the following expression in a series of steps. Supply the property to justify each step he takes. 7x + 4 + 2(5 +x) Given 7x + 4 + 10 + 2x ______________ 7x + (4 + 10) + 2x ______________ 7x + 14 + 2x ______________ 7x + 2x + 14 ______________ 9x + 14 ______________
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