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nikklg [1K]
3 years ago
10

It 3x - 2 = 7, then 3x = 9 is an example of the ?

Mathematics
1 answer:
vova2212 [387]3 years ago
3 0

Answer:

Addition Property of Equality

Step-by-step explanation:

So we had:

3x-2=7

And then we got:

3x=9

We did this by adding 2 to both sides of the equation. When we added 2, the left side cancelled and the right side equated to 9:

(3x-2)+2=(7)+2\\3x=9

Since we added 2 to both sides, this is an example of the addition property of equality.

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