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26-10-2017
Mathematics

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in the diagram below eg=100, ef=4x-20, and fg=2x+30

in the diagram below eg100 ef4x20 and fg2x30 class=

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26-10-2017

4x + 20 + 2x + 30 = 100
6x + 10 = 100
6x = 90
x = 18

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