Points A, B, and C are collinear. Point B is between A and C. Find AB if AC=15 and BC=7.

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Points A, B, and C are collinear. Point B is between A and C. Find AB if AC=15 and BC=7.

Collinear means on the same line.

By segment subtraction, we have:
AB = AC - BC
AB = 15 - 7
AB = 8