Question

which expressions are equivalint to 3x +2(x - 1) -4

A. 3x + 2(x -1) -4
B. 5x - 6
C. 3(x - 4)
D. 3(x + 2) -6
E. 6(x - 1)

Answer 1

Answer:

A.  3x +2(x - 1) -4 and B. 5x-6

Step-by-step explanation:

One of the answers is letter A because its the same exact expression as stated in the question. The other answer is B because of the distribution property you multiple x by 2 and multiply -1 by 2. This now gives us the expression 3x+2x-2-4. Now we add/subtract like terms and that gives the the answer 5x-6. I hope this helps.

Answer 2

Answer:

B. 5x - 6

Step-by-step explanation:

You just need to expand the expression, 3x + 2(x - 1) - 4

1) expand the brackets first (laws of arithmetic), 3x + 2x - 2 - 4

2) Simplify and you will get 5x - 6 which is option B