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-2.1x+13.6=5.3
We move all terms to the left:
-2.1x+13.6-(5.3)=0
We add all the numbers together, and all the variables
-2.1x+8.3=0
We move all terms containing x to the left, all other terms to the right
-2.1x=-8.3
x=-8.3/-2.1
x=3+1/1.05
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