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Mathematics, 13.01.2021 21:40 portedon6626

Rob simplified an expression using the following steps. Step 1: 2x - 3+ 5x + 7
Step 2: 2x + 5x-3+ 7
Step 3: 7x + 4
Which property justifies Step 3?

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Rob simplified an expression using the following steps. Step 1: 2x - 3+ 5x + 7
Step 2: 2x + 5...

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