Question 199797
 I am having trouble with the following problem. I truly need help. 
9x + 24y = 90
3x + 8y = 30 
These need to be solved using the multiplication/addition method. I have several more problems like this and will use this as an example. I need step by step directions so I can do the other problems. Thank-you so, so much!!!
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That's the elimination method - you eliminate the variables by multiplying to get the same coefficient for one of them.
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For this example, tho, eqn 1 is 3 times eqn 2.  No single solution is possible.
If you graph these 2, you get the same line twice.