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umka21 [38]
3 years ago
13

Anca a citit 375 de pagini dintr-o carte. În fiecare zi, începând cu a doua zi, ea a citit cu 5 pagini mai mult decât în ziua pr

ecedentă, și a terminat de citit cele 375 de pagini în 5 zile. Determinaţi numărul de pagini citite de Anca în prima zi.
Mathematics
1 answer:
prohojiy [21]3 years ago
8 0

Answer:

a=65

Step-by-step explanation:

Avem 375 pagini

Notam cu a numaruide pagini

In prima zi avem-a, poi a doua zi-a+5, a treia-a+10, apatra-a+

15 si a cincea zi avem-a+20

Le adunam si egalam cu 375

5a=50=375

5a=325

a=65

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