Question 85

If the G.C.D of 28 and 49 is expressed as 28x + 49y, then a pair (x , y) =

Solution
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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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