Complete the proof. Given: AB = 7x + 1, BC = 4x, AC = 111
Prove: x = 10

Statement Reason
1. AB = 7x + 1, BC = 4x, AC = 111 1. Given
2. AC = AB + BC 2.
3. 111 = 7x + 1 + 4x 3.
4. 111 = 11x + 1 4. Combine Like Terms
5. 110 = 11x 5. Subtraction Property of Equality
6. 10 = x 6. Division Property of Equality
7. x = 10 7.

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