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

Algebra ->  Real-numbers -> SOLUTION: Give the missing numerator: 3x-1 /4=?/28      Log On


   

Question 8510: Give the missing numerator: 3x-1 /4=?/28
Answer by prince_abubu(198) About Me  (Show Source):
You can put this solution on YOUR website!
You've got +%283x+-+1%29%2F4+=+Q%2F28+ 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.