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16-02-2017
Mathematics

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Simultaneous equations
please show all working out

6x−5y=0
4x−5y=−10

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Iknowit Iknowit

16-02-2017

6x-5y=0
4x-5y=-10 |*(-1)

6x-5y=0 |
-4x+5y=10| +

2x=10
x=5

6*5-5y=0
30-5y=0
30=5y
y =6

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