How do you solve #2x + 1 = 9#?

Answer 1

Isolate #x# on one side of the equation.

In order to solve this equation, you have to isolate#x# on one side of the equation. You can do that in two steps.
First, add #-1# to both sides of the equation

Two times the red color(cancel(black)(1))) minus the red color(cancel(black)(1))) equals nine minus one.

#2x = 8#
Finally, divide both sides of the equation by #2# to get
#(color(red)(cancel(color(black)(2))) * x)/color(red)(cancel(color(black)(2))) = 8/2#
#x = color(green)(4)#
And there you have it. If you double #x# and add one, you get nine.
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Answer 2

To solve 2x + 1 = 9, you first subtract 1 from both sides to isolate the 2x term. Then, divide both sides by 2 to solve for x. The solution is x = 4.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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