Question

If: \qquad AC = 64 AB = 7x + 8, and BC= 3x+6, Find BC

Answer 1

The answer is 21.

First you Add both AB and BC which is 10x +14. Then you put 64 into the equation. 10x+14=64. Subtract 14 from 64 which is 50. So 10x=50. Then divide 10 from 50. which would be x=5. So if you plug it in. It would be 21.