ac = ab + bc
11x + 2 = 3 + 2x + 5
11x - 2x = 8 - 2
9x = 6
x = 6/9
x = 2/3
bc = 2x + 5
bc = 2 (2/3) + 5
bc = 1 1/3 + 5
bc = 6 1/3
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