Answer:
AB = 23
Explanation:
AC = AB + BC
(7x + 6) = (6x - 1) + (4x - 5)
7x + 6 = 6x - 1 + 4x - 5
7x + 6 = 10x - 6
-3x+ 6 = -6
-3x = -12
x = 4
AB = 6x - 1
= 6(4) - 1
= 24 - 1
= 23
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