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Expand each of the separate parts out:

7(x + 4) ==> 7x + 28

8(x + 5) ==> 8x + 40

15(x + 3) ==> 15x + 45

Now put them together:

7x + 28 + 8x + 40 + 15x + 45

Collect like terms to get your answer:

30x + 113

Hope This Helps You!

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