# How do you solve #2x + 6x - 3 = 21#?

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To solve the equation 2x + 6x - 3 = 21, first combine like terms to simplify the equation: 8x - 3 = 21. Then, add 3 to both sides: 8x = 24. Finally, divide both sides by 8: x = 3.

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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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