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-0.53x+0.23x=8.4
We move all terms to the left:
-0.53x+0.23x-(8.4)=0
We add all the numbers together, and all the variables
-0.3x-8.4=0
We move all terms containing x to the left, all other terms to the right
-0.3x=8.4
x=8.4/-0.3
x=-28
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