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Translate the following phrase into an algebraic expression. 20 degrees lower than y degrees

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Answer:

y° -20°

Explanation:

The idea of lower or higher is generally expressed algebraically using subtraction or addition. If "b" is 20 lower than "a", then 20 must be subtracted from "a" to make it equal to "b".

Here the units of degrees are attached to each of the quantities by the problem statement.

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