7-a;a=6

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Solution for 7-a;a=6 equation:



7-aa=6
We move all terms to the left:
7-aa-(6)=0
We add all the numbers together, and all the variables
-aa+1=0
We move all terms containing a to the left, all other terms to the right
-aa=-1
a=-1/1
a=-1

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