You can put this solution on YOUR website! Starting with
x+3y= -2
-4x-5y=8
Multiply the first equation by 4
4(x+3y= -2)
4x+12y=-8
Add the second equation
4x + -4x + 12y + -5y = -8 + 8
7y = 0
y = 0
...
Multiply the first equation by 5 and the second equation by 3
5(x+3y= -2)
3(-4x-5y=8)
To get
5x+15y=-10
-12x-15y=24
Add the equations
5x + - 12x + 15y + -15y = -10 + 24
-7x = 14
x = -2
...
x = -2 and y = 0
.......................
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