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2.4-3.7a=13.13
We move all terms to the left:
2.4-3.7a-(13.13)=0
We add all the numbers together, and all the variables
-3.7a-10.73=0
We move all terms containing a to the left, all other terms to the right
-3.7a=10.73
a=10.73/-3.7
a=-2+1/1.1111111111111
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