Question

Select all expressions that are equivalent to 6x+1-(3x - 1). Justify your choices.

a. 6x + 1 - 3x - 1
d. 6x - 3x +1 - 1
b. 6x + 3x + 1 + 1
e, 6x + 1 + 3x - - 1
C3x + 2

Answer 1

C) 3x + 2

Explanation:

6x+1-(3x-1)

You can assume a 1 outside the parentheses.

6x+1-1(3x-1)

Then use the distributive property to get rid of the parentheses.

6x+1-3x+1

Then combine similar terms.

3x+2