As she gave out the reds in groups of 13 and the blues in sets of 20, our answer has to be divisible by both of these!
think of it like finding the lowest common denominator for a fraction!
in this case, the lowest number both go into is 260 (13X20)
Answer:
Step-by-step explanation:
Use KCF method
Keep the first fraction
Change division to multiplication
Flip the second fraction.
÷ 
If you use the pothaorian theorym (A squared + B squared= C squared) youll be able to figure out the right answer is 65.
First, you need to collect the like terms; 7x + (-20 - 90). Next simplify; 7x - 110
answer; 7x - 110
