Answered

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one of the steps Lori used to solve the equation is shown. what property justifies this step?

Sagot :

Option (a)

GIven:

The equation is,

[tex]9x+(-9x)+12=0+12[/tex]

The objective is to identify the property which justifies the equation.

By comparing the LHS and RHS of the equation, the value of 9x+(-9x) is calculated on the basis of additive inverse property.

Additive inverse property states that the sum of a number and its inverse will be zero.

Here, the value of 9x+(-9x) is obtained as zero.

Hence, option (a) is the correct answer.

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