ANSWER—C.................................
5/12 + 3/12 = 8/12
8/12 of the games are either sports or educational.
Add the prices together
Then divide by 3.
*6.25 + 3.25 = 9.50/3 = 2 of them pay 3.16 while the other pays 3.17.
27 - 9x +15y
Factor out common term 3 :
3(9-3x+5y)
hope this helps!
No, we do not multiply the first equation by 2 and then add it to the second equation. We have to multiply the first equation by 4.
To illustrate this point, consider system A:

If we multiply the first equation by 2, we get

Now, if we replace the second equation with the sum of the second equation and
, we get

which simplifies to

This is not an equivalent system to System B. We can see that we ended up with a 2y = 4 equation.
In order to end up with a 2x = 10 second equation, we have to multiply the first equation of system A by 4 to get

If we replace the second equation with the sum of the second equation and
, we get

which simplifies to

Otherwise, you are correct. The solution to system B is the solution to system A. Adding an equation to another does not change the system.