Question

Решите пожалуйста,умоляю!!

Answer 1

(5a+5b)/(b²) · (b) /(a+b)= 5 (a+b)/(b²) · (b) /(a+b)=[5 (a+b)·b] / [(b²) (a+b)]=
=5/b

Answer 2

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