Question

cine mă ajută vă rog din suflet

Answer 1

13 a)
a/b=3
a=3b
(2x3b+3b)/(3b+b)=(6b+3b)/4b=9b/4b=9/4=2,25

b)a/b=4
a=4b
(5x4b-2b)/ (2x4b+b)=(20b-2b)/(8b-2b)=18b/6b=3

c) a/b=5
a=5b
(4x5b+5b)/(5b-b)=(20b+5b)/4b=25b/4b=25/4=6,25