Question

3x + y = -4
2x + 5y = 6

A) V = {(1, 1)}

B) V = {(3, 3)}

C) V = {(2, 1)}

D) V = {(-2,2)}

E) V = {(3, 1)}

Answer 1

Oi Matheus

3x + y = -4
2x + 5y = 6

15x + 5y = -20
2x + 5y = 6

15x - 2x = -20 - 6
13x = -26

x = -2

-4 + 5y = 6
5y= 10

y = 2

D) V = {(-2,2)}