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2.3x=-6.9
We move all terms to the left:
2.3x-(-6.9)=0
We add all the numbers together, and all the variables
2.3x+6.9=0
We move all terms containing x to the left, all other terms to the right
2.3x=-6.9
x=-6.9/2.3
x=-3+8.881784197E-16/2.3
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