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-2.1x+3.7=-8.9
We simplify the equation to the form, which is simple to understand
-2.1x+3.7=-8.9
We move all terms containing x to the left and all other terms to the right.
-2.1x=-8.9-3.7
We simplify left and right side of the equation.
-2.1x=-12.6
We divide both sides of the equation by -2.1 to get x.
x=6
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