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Ex 4. Compunerea problemei apologize am nevoie

Ex 4 Compunerea Problemei Apologize Am Nevoie class=

Răspuns :

(2*x-30):15+15 = 315

(2*x-30):15 = 315-15 = 300

2*x-30 = 300x15 = 4500

2*x = 4500+30 = 4530

x = 4530:2 = 2265