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15-09-2016
Mathematics

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AC=3x+3, AB=-1+2x and BC= Find x

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mbk1011 mbk1011

15-09-2016

set AC and AB equal to each other
3x+3=-1+2x
put your Xs on one side.
subtract 2x on each side.
1x+3=-1
subtract your 3 from each side.
1x=-4
divide
x=-4
to find BC, plug in x into the equation if it tells you to.

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