- #1

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## Homework Statement

(E) : 2Lcm(x,y)-5gcf(x,y0=7

## Homework Equations

1- Find the possible values of the the number T=gcf(x,y)

2- Solve in N^2 the equation (E).

## The Attempt at a Solution

For number 1 i transformed the equation and I found an equivalence of 2T Ξ 7(mod 5gcf(x,y) is that correct, and how can i proceed.

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