SOLUTION: I am trying to help my daughter with her homework and it has been a while since fractions.....I do know the basics but I am stumped and cannot explain this to her. 9/8=x/6 is the p

Algebra ->  Equations -> SOLUTION: I am trying to help my daughter with her homework and it has been a while since fractions.....I do know the basics but I am stumped and cannot explain this to her. 9/8=x/6 is the p      Log On


   

Question 14194: I am trying to help my daughter with her homework and it has been a while since fractions.....I do know the basics but I am stumped and cannot explain this to her. 9/8=x/6 is the problem. Equals should have equal crossproducts, Right? That would mean that 9x6=54 and 8x x=54, x=6 3/4?
I don't understand enough to help her. Please help.
Thanks so much!
Answer by Alwayscheerful(414) About Me  (Show Source):
You can put this solution on YOUR website!
well, you seem to have mentioned a concept called cross multiplication. That is exactly what you want to use. Basically, you have the idea, but it was very hard to understand even for me.
You can set up the problem as
9%2F8+=+x%2F6
Then you cross multiply so the following equation is formed:
9%2A6=8%2Ax
9%2A6=54
So you can get the following equation.
54=8x
In order to get the value of X, you need to get rid of the 8, so you divide both sides by 8.
54%2F8=x
Then you can just simplify to get the final answer.
54%2F8+=+27%2F4
That fractions ends up to be an improper fraction and you can always convert it to a mixed number of 6 3/4.
while you answer is correct, your explanation was a bit confusing
Hope this helps your daughter out!