simply the expression
-4+2x+8
??
2x+4
2x + 4
or
2(x+2)
but what happens to the 8?
8 - 4 = 4
ohh okay...so if i said 4x+1+(-3) it would be like 4x+1-3 then i would do:
3-1=2
so it would be 4x+2 ?
When you simplify, you combine like terms.
In your expression you have one unknown >> 2x.
You have two known numbers >> + 8 and - 4.
Please study Cindy's and Damon's answers. They both posted the correct answer.
To simplify the expression -4 + 2x + 8, we can combine like terms. Like terms have the same variable (in this case, x) raised to the same power.
First, we can combine -4 and 8, since they are constants without any x term:
-4 + 8 = 4
So now the expression becomes 4 + 2x.
Now there are no more like terms to combine, so the expression -4 + 2x + 8 is simplified to 4 + 2x.