A+B+C+D+E=?

Algebra Level 1

Let a,b,c,d,e be positive reals satisfying a+b=ca+b+c=da+b+c+d=ea+b=c\\ a+b+c=d\\ a+b+c+d=e If c=5, compute a+b+c+d+e.a+b+c+d+e.

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