We are given that

.
Substitute x with 5-x, then the above equation becomes:

, that is

So, we have the following system of equations:
i)

ii)

multiply the first equation by -4, so that we eliminate f(5-x)'s
i)

ii)

adding the 2 equations side by side we have:

expanding the binomial, and collecting same terms we have:


dividing by -5:

dividing by 3:

Answer:
Well, we have to determinate the 65% of 140, which are 91 members play soccer.
The total members are 140, if 91 play soccer, 49 members do not play soccer.
The answer is 49 members.
2/13_
Step-by-step explanation:
6/39_=
_6÷39/3
=2/39_
=11÷2/39_
=2/13_
Answer:
1 : 8
Step-by-step explanation:
Answer:
5/7 of the picture
Step-by-step explanation: