Question 1102116
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2x + y = 42,
 x - y = -6.


Add the two equations. You will get

3x = 42 - 6 = 36  ====>  x = {{{36/2}}} = 12.


Then from the second equation  y = x + 6 = 12 + 6 = 18.


<U>Answer</U>.  x= 12,  y= 18.
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