12=a-1

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Solution for 12=a-1 equation:



12=a-1
We move all terms to the left:
12-(a-1)=0
We get rid of parentheses
-a+1+12=0
We add all the numbers together, and all the variables
-1a+13=0
We move all terms containing a to the left, all other terms to the right
-a=-13
a=-13/-1
a=+13

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