Question

Which of the following choices best describes the expression:(2x + 1) - (x + 3/2)A: equivalent to 1/2x - 1B: equivalent to x - 1/2 C: not equivalent to 1/2x - 1 or x - 1/2

Answer 1

In this case the answer is very simple. .

We need to apply algebraic rules to solve the expression.

(2x + 1) - (x + 3/2)

2x + 1 - x - 3/2

`2x\text{ - x + 1 - }(3)/(2)\text{ = x + }(2-3)/(2)\text{ = x -}(1)/(2)`

The solution is:

B: x - 1/2