Answer:
4
Explanation:
Alright so all you have to do is substitute x = 2 into the equation/function.
It should look like this
5(2) - 3(2)
Simply multiply and subtract afterwards to get your remaining value
10 - 6
4
A quicker way would be to simplify the like terms.
add 5x to -3x
5x - 3x = 2x
Substitute for 2...
2(2) = 4!
See? That's not too difficult.