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-0.3x + 0.7x-3=3
We simplify the equation to the form, which is simple to understand
-0.3x + 0.7x-3=3
We move all terms containing x to the left and all other terms to the right.
-0.3x + 0.7x=+3+3
We simplify left and right side of the equation.
+ 0.4x=+6
We divide both sides of the equation by 0.4 to get x.
x=15
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