# Jim weighs 30 pounds less than Tom, and together they weigh 210 pounds. Let #n# Tom's weight in pounds. What would be the equation that expresses the total of Jim's and Tom's weights?

Jim and Tom's total weight is expressed by

and solving this equation tells us that Tom weighs 120 pounds, and Jim weighs 90 pounds.

Thus, the formula for their combined weight would be

Tom has a weight of 120 pounds.

Jim's weight is then

Jim has a weight of ninety pounds.

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(n + (n - 30) = 210.)

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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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