# Andrew's three symmetric numbers

Algebra Level 3

Andrew was playing with three numbers $$a,b$$ and $$c$$.
First, he subtracted $$b$$ from the sum of other two and got 1,
then he subtracted $$c$$ from the sum of other two and got 2,
then he subtracted $$a$$ from the sum of other two and got 3.

Then, Andrew challenged his friends to find the value of $$\dfrac{b+c}{a}$$ . So what is the value of $$\dfrac{b+c}{a}$$?

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