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27x-28x-1=0
We simplify the equation to the form, which is simple to understand
27x-28x-1=0
We move all terms containing x to the left and all other terms to the right.
+27x-28x=0+1
We simplify left and right side of the equation.
-1x=+1
We divide both sides of the equation by -1 to get x.
x=-1
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