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Brad876
29.06.2019 •
Mathematics
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)
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Ответ:
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.
Ответ:
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
Ответ:
The answer is 5
Step-by-step explanation: