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Mathematics, 23.12.2020 18:50 kekoanabor19

7. Solve 3(a+3)-6=21. Write a reason for each step. Given
3(a+3)-6=21
3a+9-6=21
3a +3=21
3a = 18
a=6
Simplify.
[2]
Division Property of Equality
c.
a. [1] Simplify
[2] Addition Property of Equality
b. [1] Distribution Property
[2] Subtraction Property of Equality
[1] Simplify
[2] Subtraction Property of Equality
[1] Distribution Property
[2] Addition Property of Equality
d.

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7. Solve 3(a+3)-6=21. Write a reason for each step. Given
3(a+3)-6=21
3a+9-6=21
3...
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