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(25•a+250):(35:7)-25=75

AFLA-L PE a


Răspuns :

(25•a+250):(35:7)-25=75
(25a+250):5-25=75
(25a+250):5=75+25
(25a+250):5=100
25a+250=100x5
25a+250=500
25a=500-250
25a=250
a=250:25
a=10