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2.3x-1+8=0.9
We move all terms to the left:
2.3x-1+8-(0.9)=0
We add all the numbers together, and all the variables
2.3x+6.1=0
We move all terms containing x to the left, all other terms to the right
2.3x=-6.1
x=-6.1/2.3
x=-2+1/1.53333333333
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