a-7a=18

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Solution for a-7a=18 equation:



a-7a=18
We move all terms to the left:
a-7a-(18)=0
We add all the numbers together, and all the variables
-6a-18=0
We move all terms containing a to the left, all other terms to the right
-6a=18
a=18/-6
a=-3

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