4: (3/4 - 1/2) X 3/5.
You need them all to have the same denominator (bottom number)
The lowest common denominator (LCM) of 2,4 and 5 is 20
4 X 5 = 20
2 X 10 = 20
5 X 4 = 20
Then multiply the top number by the amount you need to multiply the bottom number by to get 20
3 X 5 = 15
1 X 10 = 10
3 X 4 = 12
(3/4 - 1/2) X 3/5. Turns to (15/20 - 10/20) X 12/20.
15 - 10 = 5
5 X 12 = 60
Answer: 60/20
Simplified: Either 3 or 3/1.
If you use the steps above then you should be able to do the rest :D
If you need anymore help, please ask
Answer:
A 8.469862e+15 so that is the answer hope u get the answer cprrect
First one is 7.73 (23.19/3)
Second one is 14.04 ((19.71/7.3) x 5.2)
I honestly don't know if this is correct but it might be i think its the middle one y=f(x)=x to the second power
Equation= x divided by -9 = -16
solve= 9 x 16 = 144
answer is 144
