what is 2x + 4 + x + 5 + 4x?

Answer 1

7x + 9

Answer 2

This is an example question involving the concept of "combining like terms". Notice the word "like". We want to combine any terms (a term is simply anything that is added or subtracted) that look like each other. So we want to group all of the terms that have x's together and we want to group all of the plain numbers together.

Let's deal with the x's first. Grouping them together gives us 2x+x+4x. Now for a neat trick. In your mind, replace the x with the word oranges. So now, in your head, think 2 oranges plus an orange plus four oranges. How many oranges are there? The answer is 7 oranges. Now put the x back in place of the word oranges. Thus we have 7x.

Add the plain numbers together next, 5+4=9. Now then, since every thing is added together in the original expression that we were given, add the 7x to the 9.

Note that since the 9 doesn't have an x you cant actually add them together, it is a symbolic addition.

So our answer is 7x+9.

A note, although this problem is all addition, be careful of the signs in front of terms when you are grouping them together.

Answer 3

7x + 9
You have to combine like terms, being all of the numbers with x's, and the x by itself is implied as the number 1.
so 2x + x + 4x = 7x
4 + 5 = 9
so... 7x + 9

Answer 4

add all the variables (the x terms) and add the number terms:

(2x + x + 4x) + (4 + 5)

7x + 9

And there you go!

Answer 5

7x+9

Answer 6

It is an algebra problem. The answer to this algebra problem would be 7x + 9

Answer 7

it is =7x+9

Answer 8

225 is the answer