2 Answers

Fhossfel · Answer 1 · 2021-05-27T03:19:59+0000

Answer:

7x + 28

Explanation:

Line up the columns just like with standard addition. Keep the x numbers in the same columns and keep the integers in their columns. It will look like this:

3x + 15

PLUS 4x + 13

----------------------

7x + 28

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