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39.99a+.45=44.99a+.40
We move all terms to the left:
39.99a+.45-(44.99a+.40)=0
We add all the numbers together, and all the variables
39.99a-(44.99a+0.4)+.45=0
We add all the numbers together, and all the variables
39.99a-(44.99a+0.4)+0.45=0
We get rid of parentheses
39.99a-44.99a-0.4+0.45=0
We add all the numbers together, and all the variables
-5a+0.05=0
We move all terms containing a to the left, all other terms to the right
-5a=-0.05
a=-0.05/-5
a=0.05/5
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