Question 618735
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Hi,
Find the value of {{{x + y}}} where x and y are positive integers that 
satisfy: 13x + 19y = 212.
x = xo + pt
y = yo - qt
by trial and error find(9,5) to be a solution
x = 9 + pt
y = 5 - qt
As GCD of 13 and 19 is 1, therefore:
x = 9 + 19t
y = 5 - 13t
(x + y) = 6t +14