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x.x+12=0
We simplify the equation to the form, which is simple to understand
x.x+12=0
We move all terms containing x to the left and all other terms to the right.
+1.1x=0-12
We simplify left and right side of the equation.
+1.1x=-12
We divide both sides of the equation by 1.1 to get x.
x=-10.9090909091
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