What expression represents the sum of 8 and twice a number

1 answer:

7 0

Idk if you have any choices or not but it should look like 8 + 2x
How to get the answer: sum means addition, and twice a number is 2 times it. We don't know the number so we'll use x. Two times a number is 2x
And since we are adding we will put an addition sign
8 + 2x

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In this case you can add the two equations so that the terms with x cancel:

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———————
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Then plug y back into either original equation to solve for x. I’ll use the first:

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