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26-01-2020
Mathematics

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Substitution for {2x-3y=11 and -x + 2y = -6

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26-01-2020

Step-by-step explanation:

-x+2y=-6

x-2y=6

x=2y+6

substitute in 2x-3y=11 gives us 2(2y+6)-3y=11

4y+12-3y=11

y=-1

-x+2(-1)=-6

-x=-4

x=4

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