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0.02a+100.027=100
We move all terms to the left:
0.02a+100.027-(100)=0
We add all the numbers together, and all the variables
0.02a+0.027=0
We move all terms containing a to the left, all other terms to the right
0.02a=-0.027
a=-0.027/0.02
a=-1+0.007/0.02
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