Answer:
3/4=21/28
Explanation:
This is because 3×7=21 and 4×7=28
Both numbers in the original fraction must be multiplied by the same number to get the equivalent fraction.
A valid proportion would be 3/4=21/28.
You would multiply both the 3 & 4 is 3/4 by 7 to get 21/28.
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