3 1/2 + 4 1/4 + 6 1/8 - 2 3/4

11 1/8

Explanation:

First find the LCD: 8

3 1/2 = 3 4/8

4 1/4 = 4 2/8

6 1/8 = 6 1/8

2 3/4 = 2 6/8

Rewrite the problem

3 4/8 + 4 2/8 + 6 1/8 - 2 6/8

Solve

11 1/8

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