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Grade-5
Equivalent Fractions Missing Number
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Choose the missing number that makes these fractions equivalent:
7
17
=
?
51
Explanation
Now, consider left hand side of the given expression
7/17
Multiply numerator and denominator by 3 we get:
= (7 x 3)/(17 x 3)
= 21/51
Therefore, 7/17 is equivalent to 21/51 and the missing number is 21
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