Question

Encontre o conjunto solução do sistema
5x+2y=3
10x+6y=14

Answer 1

5x +2y = 3 (-2)
10x +6y = 14

-10x -4y = -6
10x +6y = 14

2y = 8
y = 8/2
y = 4

5x +2 . 4 = 3
5x +8 = 3
5x = 3 -8
5x = -5
x = -5/5
x = -1