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Vă rog urgent!!!!!Ex.2 şi problema

Vă Rog UrgentEx2 Şi Problema class=

Răspuns :

(e:8+5609):2-111 = 400×10
(e:8+5609):2-111 =4000
(e:8+5609):2=4000+111
(e:8+5609):2=4111
e:8+5609=4111×2
e:8+5609=8222
e:8=8222-5609
e:8=2613
e=2613×8
e=20.904