Question

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

Answer 1

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