Question

Ex 3, partea a ||-a ! Dau coroana !

Answer 1

y-probleme nerezolvate/ greșite

x-probleme corecte

x+y=10 => x=10-y

3x-2y=15

3(10-y)-2y=15

30-3y-2y=15

30-5y=15

-5y=15-30

-5y=-15

y=3 (probleme greșite/ nerezolvate)

x=10-3=7 (probleme corecte)

Kawaiimath