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2a-19.4=22
We move all terms to the left:
2a-19.4-(22)=0
We add all the numbers together, and all the variables
2a-41.4=0
We move all terms containing a to the left, all other terms to the right
2a=41.4
a=41.4/2
a=20+1/1.4285714285714
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