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(20:a+20):6=50:10 va rog

Răspuns :

(20:a+20):6=5
(20:a+20)=5x6
20:a=30-20
20:a=10
a=20:10
a=2
(20:a+20):6=50:10
(20:a+20):6=5
20:a+20=6x5
20:a+20=30
20:a=30-20
20:a=10
a=20:10
a=2