SOLUTION: is 7 over 9 = 21 over 18 a proportion

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Question 223200: is 7 over 9 = 21 over 18 a proportion

Answer by jim_thompson5910(21667) About Me  (Show Source):
You can put this solution on YOUR website!
What you're basically asking is if 7%2F9=21%2F18 is true.


7%2F9=21%2F18 Start with the given equation.


%287%29%2818%29=%289%29%2821%29 Cross multiply.


126=189 Multiply.


Since the right side is the bigger of the two numbers, this means 126%3C189 which also means that 7%2F9%3C21%2F18.


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Answer

So 7%2F9%3C21%2F18 which means that the two fractions 7%2F9 and 21%2F18 are not in proportion to one another.

So 7%2F9=21%2F18 is NOT a proportion.