Prove that there do not exist integers $\displaystyle m,n \in \mathbb{Z} $ such that $\displaystyle 14m + 20n = 119$

Im not quite sure how to go about proving this

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- Dec 20th 2009, 06:19 AMStylis10Eqaution with 2 variables
Prove that there do not exist integers $\displaystyle m,n \in \mathbb{Z} $ such that $\displaystyle 14m + 20n = 119$

Im not quite sure how to go about proving this - Dec 20th 2009, 06:32 AMHallsofIvy
- Dec 20th 2009, 06:40 AMStylis10