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va rog repede dau coroana​

Va Rog Repede Dau Coroana class=

Răspuns :

Răspuns:

Aflați x din proportia:

x/7=5/14=>7×5/14=35/14=2,5

x-1/12=5/3=>12×5/3=60/3=20

7/5=y/30=>7×30/5=210/5=42

a/2=7/6=>2×7/6=14/6=2,(3)