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5.9=1.5a-3.4
We move all terms to the left:
5.9-(1.5a-3.4)=0
We get rid of parentheses
-1.5a+3.4+5.9=0
We add all the numbers together, and all the variables
-1.5a+9.3=0
We move all terms containing a to the left, all other terms to the right
-1.5a=-9.3
a=-9.3/-1.5
a=6+0.3/1.5
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