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0.70+0.20a=0.50a
We move all terms to the left:
0.70+0.20a-(0.50a)=0
We add all the numbers together, and all the variables
0.20a-(+0.50a)+0.70=0
We add all the numbers together, and all the variables
0.20a-(+0.50a)+0.7=0
We get rid of parentheses
0.20a-0.50a+0.7=0
We add all the numbers together, and all the variables
-0.3a+0.7=0
We move all terms containing a to the left, all other terms to the right
-0.3a=-0.7
a=-0.7/-0.3
a=2+0.1/0.3
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