Question

1.x + y)" alt="3(x + y) + 7(x + y)" align="absmiddle" class="latex-formula">
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Answer 1

You would use the distributive property.
3*x 3*y + 7*x 7*y
3x + 3y + 7x + 7y
10x + 10y would be your simplified answer

Answer 2

That’s the work for it in case you need it, but the answer is 10x+10y