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3.666(12-a)=43000
We move all terms to the left:
3.666(12-a)-(43000)=0
We add all the numbers together, and all the variables
3.666(-1a+12)-43000=0
We multiply parentheses
-3.666a+43.992-43000=0
We add all the numbers together, and all the variables
-3.666a-42956.008=0
We move all terms containing a to the left, all other terms to the right
-3.666a=42956.008
a=42956.008/-3.666
a=-11717+1/2.467025571998
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