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(2a-4a+6)+a+4a+1)=22
We move all terms to the left:
(2a-4a+6)+a+4a+1)-(22)=0
We add all the numbers together, and all the variables
(-2a+6)+a+4a+1)-22=0
We add all the numbers together, and all the variables
5a+(-2a+6)=0
We get rid of parentheses
5a-2a+6=0
We add all the numbers together, and all the variables
3a+6=0
We move all terms containing a to the left, all other terms to the right
3a=-6
a=-6/3
a=-2
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