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3-.09x=2.1
We simplify the equation to the form, which is simple to understand
3-.09x=2.1
We move all terms containing x to the left and all other terms to the right.
-0.09x=+2.1-3
We simplify left and right side of the equation.
-0.09x=-0.9
We divide both sides of the equation by -0.09 to get x.
x=10
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