Question 238759
Hello, 
You are spot on regarding a & c being equal.
a) 4/5 and 120/150
b) -6/5 BS -7/6
C) -4/20 AND 4/-20
As far as what BS means--I have not run across that. Check to make sure you copied it correctly. If so, look in the back of your book in the index and see if you can find it. As far as solving b, first get both fractions with common denominators. Multliply the first by 6/6 and the second fraction by 5/5. This gives you:
-36/30 and the second fraction -35/30
Now you can see what that -36/30 is lesser than -35/30 (Note: this is a bit tricky because we're dealing with negative numbers)or in other words:
-6/5 is lesser than -7/6 
RJ Toftness
www.math-unlock.com