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If the G.C.D of 28 and 49 is expressed as 28x + 49y, then a pair (x , y) =
(-1, 1)
(1, -1)
(-1, 2)
(2, -1)
we know the G.C.D. of 28 and 49 is = 7
then we have given
28x + 49y = 7
but trial and error we have
28.2-49 = 7
7 = 7
X = 2 and y= -1 Answer
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