Question 135392This question is from textbook Essentials of Elementary Algebra
: Solving Systems of Linear Equations by the Substitution Method.
I am having a difficult time understanding how to do this. I was hoping someone could help me.
The problem is: 2x+3y=7
x=2
So would it be 2(2)+3(y)=7? How do I get y?
4+3y=7 I would think that y would equal 1 since 3*1=3+4 would equal 7
However, I am not sure if this is the way the problem needs to be worked out.
Will you please help me understand this? Thank you!
This question is from textbook Essentials of Elementary Algebra
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! The problem is: 2x+3y=7
x=2
So would it be 2(2)+3(y)=7? How do I get y?
4+3y=7 I would think that y would equal 1 since 3*1=3+4 would equal 7
However, I am not sure if this is the way the problem needs to be worked out.
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I believe you have it.
You substituted 2 in place of x and solved for y.
You solution would be (2,1)
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Cheers,
Stan H.
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