Answer:
11/20
Step-by-step explanation:
Commutative property of multiplication
Convert everything to terms of sine and cosine:

The factors of
cancel to give

combine you like terms
4p and -p = 3p
3p+2=0
subtracts 2 from itself and 0
3p=-2
divide 3p from itself and -2
p=-2/3
Answer:
20.
Step-by-step explanation:
Assign variables. The numbers acan be 2x, 3x and 4x. Then, LCM of 2x, 3x and 4x is 12x
12x = 240
(240/12) = x = 20
The HCF of 2x, 3x, and 4x is 20. (Because x is the highest common factor.)