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20-15x=18-12x
We simplify the equation to the form, which is simple to understand
20-15x=18-12x
We move all terms containing x to the left and all other terms to the right.
-15x+12x=+18-20
We simplify left and right side of the equation.
-3x=-2
We divide both sides of the equation by -3 to get x.
x=0.666666666667
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