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2.04 Properties of equality and congruence

Interactive practice questions

By which property are $9x=-27$9x=27 and $\frac{9x}{9}=\frac{-27}{9}$9x9=279 equivalent equations?

Multiplication property of equality.

A

Addition property of equality.

B

Multiplication property of equality.

A

Addition property of equality.

B
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Fill in the blank so that the resulting statement is true.

Fill in the blank so that the resulting statement is true.

Consider the true expression:

If $AB=CD$AB=CD then $CD=AB$CD=AB

Which of the following properties does this illustrate?

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