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Given: Q = 7m + 3n, R = 11 - 2m, S = n + 5, and T = -m - 3n + 8, how do you simplify Q - [R + S] - T?

Answer 1

Hazel Anglin

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Answer 2

Isaiah Anthony

To simplify Q - [R + S] - T, you first simplify the expressions within the brackets, then perform the subtraction.

Q - [R + S] - T = Q - R - S - T

= (7m + 3n) - (11 - 2m + n + 5) - (-m - 3n + 8)

= 7m + 3n - 11 + 2m - n - 5 + m + 3n - 8

= (7m + 2m + m) + (3n - n - 3n) - (11 - 5 - 8)

= 10m - n - 24

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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.

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