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19.6a-58.8=31.36
We move all terms to the left:
19.6a-58.8-(31.36)=0
We add all the numbers together, and all the variables
19.6a-90.16=0
We move all terms containing a to the left, all other terms to the right
19.6a=90.16
a=90.16/19.6
a=4+6.6818181818182/11.136363636364
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