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Question 65527This question is from textbook Beginning Algebra
: This is like a disscussion question. Problem 51 on Page 512:
You now have had practice soving equations with one variable and equations with two variables. Compare equations with one variable to equations with two variables. How are they alike? and how are they different?
I think that the comparisons of equations with one and two variables have similarities because you have an unknown figure, which you would need to use algebraic formulas by either multiplying, dividing, adding, or subtracting to get the unknown figure. They are different in the ways in which they are treated to get the unknown number.
Then my instructor threw in an additional question to answer: What if an equation had three variables?
I am not quite sure how to answer this question. I am not even sure I am on the right track with the questions I answered above. Could you give some assistance please. Thanks.
This question is from textbook Beginning Algebra
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! It depends on how the variables are related.
If number of dimes is 8 more than number of nickels
and number of quarters is 3 less that number of
nickels, you only need one variable.
If the variables are not related to one another
you will need three equations to solve the system.
Cheers,
Stan H.
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