Answer:
C) 2
Explanation:
1/x+ 1/y= 1/4 and 1/x-1/y=3/4
Add the two equations together
1/x+ 1/y= 1/4
1/x-1/y=3/4
---------------------------
2/x = 4/4
2/x =1
Multiply each side by x
2/x *x = 1x
2 =x
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