SOLUTION: simplify the expression : (15x+21)/(9x+15) *look for an integer factor thats common to numerator and denomenator seperate the numerator and denomenator into sections: 15x/9x +

Question 511772: simplify the expression : (15x+21)/(9x+15)
*look for an integer factor thats common to numerator and denomenator
seperate the numerator and denomenator into sections: 15x/9x + 21/15
find a common denomenator therefore, 15x/9x * (15/15) and 21/15* (9x/9x); now add together
225x+189x/135x = 364x/135
anyways, i tried this but it did not give me the right solution. any insight?
Answer by John10(297) (Show Source): You can put this solution on YOUR website!
You can not simplify like the way that you did. You have to factor the numerator and denominator separately as below:
15x + 21 = 3(5x + 7)
9x + 15 = 3(3x + 5)
To simplify: just cancel out the constant term "3" from the denominator and numerator.
So (15x + 21)/(9x + 15) = (5x + 7)/(3x + 5)
John10:)
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