Question 948731: Not understanding how to solve system by substitution
Answer by Zucchini(70)   (Show Source):
You can put this solution on YOUR website! All you have to do to solve by substitution is just substitute one thing for the other. Here's an example:
First equation: Y= x + 2
Second equation: 6= x + y
All, you have to do is plug in the value of "y" from the first equation into the second equation.
6 = x + (x+2) did you see what I just did there? I just plugged for y. Now, all you have to do is solve.
6 = x + (x+2)
6 = 2x + 2
4 = 2x
2 = x
Now try to find out what "y" is.
Y = 2 + 2
Y = 4
The solution to the inequalities is (2,4)
Hope I helped you get a better understanding, if you need more help with this you can e-mail me.
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