Question

x-3y=-3
2x+6y=12 Por Favor Ayuda

Answer 1

x - 3y = -3
x + 3 = 3y

2x + 6y = 12
2x + 2(3y) = 12
2x + 2 (x+3) = 12
2x + 2x + 6 = 12
4x = 6
x = $\frac{6}{4}$ 
x = $\frac{3}{2}$
y = $\frac{3}{2}$