Respuesta :
Since we alredy know that y = 6 we can go ahead and insert it into the problem. It would look like this:
x + 4 = 6
Now we can begin to solve.
Since positive 4 is on one side, we can subtract it from both sides
It will look like this:
x + 4 = 6
x - 4 = 6 - 4
You end up with
x = 2
Now substitute all your known variables.
It will look like
2 + 4 = 6
This equation is true.
you plug the Y=4 into the equations Y.
so here:
x+y=6
x+4=6
Now you will take the new problem and get X by itself so you can later solve for Y.
x+4=6
-4. -4
_______
x=2
now take your X=2 and plug it in for your X in the problem:
x+y=6
2+y=6
Now get Y alone like you got X:
2+y=6
-2. -2
_______
y=4
So now your answers will be:
x=2 and y=4 (graphed: x,y so it would be 2,4)
To check yourself with this, just plug both of your numbers into the equation and see if you get: 6=6 that is how you know your answers are correct.
so here:
x+y=6
x+4=6
Now you will take the new problem and get X by itself so you can later solve for Y.
x+4=6
-4. -4
_______
x=2
now take your X=2 and plug it in for your X in the problem:
x+y=6
2+y=6
Now get Y alone like you got X:
2+y=6
-2. -2
_______
y=4
So now your answers will be:
x=2 and y=4 (graphed: x,y so it would be 2,4)
To check yourself with this, just plug both of your numbers into the equation and see if you get: 6=6 that is how you know your answers are correct.
