Translating Word Phrases to Algebraic Expressions

Translating Word Phrases to Algebraic Expressions

When we first introduced the operation symbols, we saw that the expression \(a-b\) may be read in several ways as shown below.

This table has six rows. The first row has a - b. The second row states a minus b. The third row states the difference of a and b. The fourth row states subtract b from a. The fifth row states b subtracted from a. The sixth row states b less than a.

Be careful to get \(a\) and \(b\) in the right order!

Example

Translate and then simplify:

  • the difference of \(13\) and \(-21\)
  • subtract \(24\) from \(-19\)

Solution

A difference means subtraction. Subtract the numbers in the order they are given.

.
Translate. .
Simplify. .

Subtract means to take \(24\) away from \(-19.\)

.
Translate. .
Simplify. .

This lesson is part of:

Introducing Integers

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