Question

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Answer 1

7x+11

Explanation:

Drop the parentheses and combine 13x and -6x which is the same as 13x-6x and it equals 7x. do the same with -4 and 15 which you can switch around (because we're adding) and make it 15-4 and it equals 11. Combine our two answers of 7x and 11 and get 7x+11

Answer 2

C. 7x + 11

Explanation:

`(13x-4)+(-6x+15)`

`13x-4-6x+15`

`7x+11`