SOLUTION: Give the missing numerator: 3x-1 /4=?/28

Question 8510: Give the missing numerator: 3x-1 /4=?/28
Answer by prince_abubu(198) (Show Source): You can put this solution on YOUR website!
You've got and they're asking you to find Q, the missing numerator.

Look at both denominators. What did they multiply to 4 to get to the 28? That would be the 7. Since they used 7 to get from 4 to 28, you must also multiply the numerator (3x - 1) by 7 to be able to fill up that missing numerator on the right hand side. So, the numerator would be 7(3x - 1) which is 21x - 7.
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