Question

Evaluate the expression (2n+7) - (2n-4) .

a) 11
b) 2n+11
c) -11
d) 2n-11

Answer 1

When evaluating the expression (2n+7) - (2n-4), the terms 2n cancel out leaving 7 + 4, which equals 11.

Step-by-step explanation:

To evaluate the expression (2n+7) - (2n-4), we start by removing the parentheses and then combining like terms. We have:

2n + 7 - 2n + 4

The terms 2n and -2n cancel each other out because they are equal in magnitude but opposite in sign. What we are left with is:

7 + 4

Which we then add together to get:

11

Therefore, the correct answer to the expression is 11, which corresponds to option (a).