Question

X – 3y = -3
2x +6y =12


solución de ecuaciones 2X2
Urgente!

Answer 1

X – 3y = -3 ------ x=3+3y 
2x +6y =12
2(3+3y) +6y = 12
6+6y +6y=12
12y= 12-6
y= 6/12
y= 1/2
x= 9/2