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How many solutions exist for the given equation?
3(x – 2) = 22 – x

User YusuMishi
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2 Answers

5 votes

Answer:

B; one solution

Explanation:

I did the quiz on edg :)

User BigBlueHat
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3(x - 2) = 22 - x

First, we will need to expand the problem. 3(x - 2) will turn into 3x - 6 = 22 - x, but to the fact of multiplying 3 times 2.

3x - 6 = 22 - x

Second, we can start doing everything on one side of the problem. Let's add 6 to each side.

3x = 22 - x + 6

Third, we can now simplify the right part of the problem. 2x = 22 - x + 6. Ignore the '2x =', and focus on 22 - x + 6. To solve this, the variable (x) is considered the number one. But, in this case, ignore the variable as well so that it looks like 22 + 6. In the end, you'll add on your variable.

3x = 28 - x

Fourth, we can now add the variable (x) to each side. Again, a variable by itself can also be shown as one.

3x + x = 28

Fifth, we can now simplify 3x + x. Again, with the variable being considered 1, we can now look at the problem as 3x + 1. Basically, add 3 + 1 and add the variable onto that.

4x = 28

Sixth, we can divide each side by 4 now. This will create a fraction which we will simplify to get our answer.

x = (28)/(4)

Seventh, our last step is to simplify the fraction. To do this, we can ask ourselves, what multiples with 4 to equal 28? 28 ÷ 4 = 7. So, this equation only has one solution.

x = 7

Answer:
\fbox {x = 4}

User Rodney G
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