Question

3 an expression is given.
(3x - 1) - (x + 2)
which expression is equivalent to the given expression?
a 2x - 3
b 2x + 1
c 4x + 1
d 4x - 3

Explanation:

Step1: Distribute the negative sign

$(3x - 1) - x - 2$

Step2: Combine like x terms

$3x - x - 1 - 2 = 2x - 1 - 2$

Step3: Combine constant terms

$2x + (-1 - 2) = 2x - 3$

Answer:

A. $2x - 3$