Posted by sonya on Friday, July 25, 2008 at 7:16pm.
Let's look at this:
The original value is 18/7. You want to find an equivalent value that has a denominator of 28. To get that value, you need to multiply the denominator by 4. To "multiply by 1" to not change the value, you need to also multiply the numerator by 4.
So:
(18 x 4)/(7 x 4) = ?/28
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