SOLUTION: Adding ans subtracting unlike rational expressions heres the problem y/4+3y/5

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Question 537767: Adding ans subtracting unlike rational expressions heres the problem y/4+3y/5
Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!
y%2F4 + 3y%2F5

The smallest denominator which  4 and 5 will both divide evenly into is 20.

The 4 on the bottom of the first term needs to be multiplied by 5 so that
it will become 20. So we multiply the first fraction by red%285%2F5%29.

The 5 on the bottom of the second term needs to be multiplied by 4 so that
it will become 20. So we multiply the second fraction by red%284%2F4%29.

red%285%2F5%29%2A%22%22y%2F4 + red%284%2F4%29%2A%22%223y%2F5

5y%2F20 + 12y%2F20

17y%2F20

Edwin