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9+a=177.8.9
We move all terms to the left:
9+a-(177.8.9)=0
We add all the numbers together, and all the variables
a+9-(160.02)=0
We add all the numbers together, and all the variables
a-151.02=0
We move all terms containing a to the left, all other terms to the right
a=151.02
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