12 +

Step: 1

12 + n = 20

[Given.]

Step: 2

To find the value of n , we need to subtract 12 on both sides of the number sentence.

Step: 3

12 + n - 12 = 20 - 12

Step: 4

[Simplify.]

Step: 5

So, the inverse operation "subtract 12" should be used to solve the number sentence.

[Simplify.]

Correct Answer is : subtract 12

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