40(a-1)-45(2a+1)=12(a-2))

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Solution for 40(a-1)-45(2a+1)=12(a-2)) equation: 



40(a-1)-45(2a+1)=12(a-2))

We move all terms to the left:

40(a-1)-45(2a+1)-(12(a-2)))=0

We multiply parentheses

40a-90a-(12(a-2)))-40-45=0

We add all the numbers together, and all the variables

-50a-(12(a-2)))-40-45=0

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