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Fill in the blank to make the two fractions equivalent. 7/9 = ?/27​

User Txemsukr
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1 Answer

2 votes

Answer: 21

Explanation:

To find the missing number you set the two equations as a proportion:


(7)/(9) = (x)/(27)

To solve for x we cross multiply:

27 × 7 = 189

9 × x = 9x

Set up an equation:

9x = 189

Divide both sides by 9:

x = 21

User Greole
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