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.3x-.9=.3
We simplify the equation to the form, which is simple to understand
.3x-.9=.3
We move all terms containing x to the left and all other terms to the right.
+ 0.3x=0.3 + 0.9
We simplify left and right side of the equation.
+ 0.3x=+1.2
We divide both sides of the equation by 0.3 to get x.
x=4
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