From the book "I Got You Babe"
14. 5x-2x=12
3x=12
X=4
15. 8b+12=6b-30
2b=42
B=21
With 5lbs of sugar syrup to get a 25% syrup you would need to add 15lbs of water
we have

<u>Find the greatest common factor GCF</u>
we know that

so
The GCF is equal to 
therefore

<u>the answer is</u>
The number is 