Question

ecuaciones lineales metodo sustitución

Answer 1

x-1=2y+12
x=2y+13

2y+13+6=3(1-2y)
2y+19=3-6y
2y=3-19-6y
2y=16-6y
6y+2y=-16
8y=-16
y=-16/8
y=-2

x=2(-2)+13
x=-4+13
x=9

9-1=2(-2+6)
8=-4+12
8=8


y=-2
x=9