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13-10-2016
Mathematics

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A.B,and C are collinear. AB=5x-19,and BC= 3x+4. Find an expression for AC if B is between A and C.

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13-10-2016

find A if B is between A and C.
A.B,and C are collinear so A, B and C are line up in a line

AC = AB + BC

AB=5x-19,and BC= 3x+4 given;

So

AC = 5x-19 + 3x+4

Simplify

AC = 8x -15

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