SOLUTION: 3 questions; If 2(x -1) = 14, then x If 5x + x² > 100, then x is not If 5x - 17 = -x + 7, then x =

Algebra ->  Equations -> SOLUTION: 3 questions; If 2(x -1) = 14, then x If 5x + x² > 100, then x is not If 5x - 17 = -x + 7, then x =       Log On


   

Question 712223: 3 questions;
If 2(x -1) = 14, then x

If 5x + x² > 100, then x is not
If 5x - 17 = -x + 7, then x =
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
# 1

2%28x-1%29=14 Start with the given equation.


2x-2=14 Distribute.


2x=14%2B2 Add 2 to both sides.


2x=16 Combine like terms on the right side.


x=%2816%29%2F%282%29 Divide both sides by 2 to isolate x.


x=8 Reduce.


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Answer:

So the solution is x=8


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# 2

5x+%2B+x%5E2+%3E+100

I'm not sure what you want to do here. Do you want to solve for x? If so, then why did you write "then x is not " ?

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# 3

5x-17=-x%2B7 Start with the given equation.


5x=-x%2B7%2B17 Add 17 to both sides.


5x%2Bx=7%2B17 Add x to both sides.


6x=7%2B17 Combine like terms on the left side.


6x=24 Combine like terms on the right side.


x=%2824%29%2F%286%29 Divide both sides by 6 to isolate x.


x=4 Reduce.


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Answer:

So the solution is x=4