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(0.5+1/3+0.25):(5/6:25/26)-0.25


Răspuns :

(0,5+1/3+0,25):(5/6:25/26)-0,25

(5/10+1/3+25/100):(5/6*26/25)-25/100

(150/300+100/300+75/300):26/30-25/100

325/300*30/26-25/100

325/260-25/100

3250/2600-650/2600

2600/2600=1