Answer:

Step-by-step explanation:
multiply the numerator/denominator of the first fraction by (x - 4)
multiply the numerator/denominator of the second fraction by (x + 2)
this ensures that the fractions have a common denominator
- 
=
-
← subtract numerators leaving the common denominator
= 
=
Answer:
13 and 1/3
Step-by-step explanation:
2×5=10
2/3 ×5 =10/3
10/3 simplifies to 3 and 1/3
Add them together to get 13 and 1/13
Step-by-step explanation:
You will use combinations
20C3 = 20*19*18= 6840 there are 6840 combinations that are possible. You can look up to find a combination calculator. For combinations the order does not matter, this order does not matter. For permutations order does matter.
Answer:
Infinity
Step-by-step explanation:
It is equal to nothing.
2x+2=2x+2
-2x -2x
2=0x+2
-2 -2
0=0