Question

Rezolva urmatoarele cerinte:

Afla numarul a, daca ab-ac=45 si b-c=9;

Afla suma b+c daca ab+ac+70=170 si a=25;

Afla diferenta b-c, daca ab-ac-48=2 si a=10

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DAU COROANA+MULTUMESC+MA ABONEZ LA VOI+ 30 DE PUNCTE!!!!!!!

Answer 1

Afla numarul a, daca ab-ac=45 si b-c=9
a(b-c)=45
a*9=45
a=45/9
a=5
Afla suma b+c daca ab+ac+70=170 si a=25
a(b+c)+70=170
a(b+c)=170-70
a(b+c)=100
25(b+c)=100
b+c=100/25
b+c=4
Afla diferenta b-c, daca ab-ac-48=2 si a=10
a(b-c)-48=2
a(b-c)=2+48
a(b-c)=50
10(b-c)=50
b-c=50/10
b-c=5