Answer: 13
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Work Shown:
AB+BC = AC
(11) + (2x-1) = 3x+3
2x+10 = 3x+3
2x-3x = 3-10
-x = -7
x = 7
which is then use to find:
- BC = 2x-1 = 2*7-1 = 13
- AC = 3x+3 = 3*7+3 = 24
As a check,
AB+BC = 11+13 = 24 = AC which confirms the answer.