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

Isolate

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

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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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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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