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09-03-2017
Mathematics

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Solve the following equation system by graphing
X-Y=4
X+Y=2
What is the solution?

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Аноним Аноним

09-03-2017

X-Y=4,
X+Y=2
-------------add
2x = 6
x = 3

X - Y =4
3 - Y = 4
Y = 3 - 4
Y = -1

solution (3 , -1)

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