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1.5a-4.5=2.4
We move all terms to the left:
1.5a-4.5-(2.4)=0
We add all the numbers together, and all the variables
1.5a-6.9=0
We move all terms containing a to the left, all other terms to the right
1.5a=6.9
a=6.9/1.5
a=4+0.9/1.5
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