9-n=7.

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Solution for 9-n=7. equation:



9-n=7.
We move all terms to the left:
9-n-(7.)=0
We add all the numbers together, and all the variables
-n+9-7=0
We add all the numbers together, and all the variables
-1n+2=0
We move all terms containing n to the left, all other terms to the right
-n=-2
n=-2/-1
n=+2

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