Answer:
11
Explanation:
You want to simplify (2x+7) - (2x - 4).
Distributive property
The distributive property tells you the factor outside parentheses applies to every term inside parentheses. It is used for the purpose of removing parentheses.
(2x+7) - (2x - 4) = 2x +7 -(2x) -(-4) = 2x +7 -2x +4
Like terms
Terms that have the same variable (or product of variables) are "like terms." Their coefficients can be combined. (This is another use of the distributive property.)
2x +7 -2x +4 = 2x -2x +7 +4 = (2 -2)x +(7 +4) = 0x +11
= 11 . . . . simplified form of the given expression