Question

rezolvați prin metoda reducerii sistemele {3x+2y=1 {4x+3y=3

Answer 1

3x+2y=1 |·4
4x+3y=3 |·3

12x+8y=4
12x+9y=9

9y-8y=9-4
y=5

3x+2·5=1
3x+10=1
3x=1-10
3x=-9
x=-3

S={-3,5}