You cannot factor out a coefficient in this expression, because 9 and 8 do not have a common factor besides 1.

Value of x is equal to :

Sum of measures of interior angles of a triangle sum upto 180°
that is :
30 pints of first type and 130 pints of second type drinks must be used to make the mixture.
<em><u>Explanation</u></em>
Lets assume, the amount of first type drink is
pints.
As the total amount of the mixture is 160 pints, so the amount of second type drink
pints.
The first type is 20% pure juice, the second type is 100% pure fruit juice and the mixture is 85% pure fruit juice. So the equation will be .....

So, the amount of first type drink is 30 pints and the amount of second type drink is (160-30)pints =130 pints.
Corrected Question
Sue travels by bus or walks when she visits the shops. The probability that she catches the bus to the shops is 0.4. The probability she catches the bus from the shops is 0.7. Show the probability that Sue walks at one way is 0.72
Answer:
(Proved)
Step-by-step explanation:
Sue travels by bus or walks when she visits the shops.
Let the event that she catches the bus to the shop=A
Let the event that she catches the bus from the shop=B
P(A)=0.4
P(B)=0.7
Both A and B are independent events.
Therefore,Probability that she catches the bus to and from the shop:
P(A∩B) = 0.4 X 0.7= 0.28
Probability Sue walks at least one way 

Hence, the probability that Sue walks at least one way is 0.72.
X=5 , x=3 - just plug in 2 and 3 into x and the lines will make it positive instead of negative