Question 624982
x+3y=7 
-x+4y=7
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0x+7y=14


7y = 14


y = 14/7


y = 2

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x+3y = 7


x+3*2 = 7


x+6 = 7


x = 7-6


x = 1


So the solutions are x = 1 and y = 2

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