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120+.40x=60+.70x
We simplify the equation to the form, which is simple to understand
120+.40x=60+.70x
We move all terms containing x to the left and all other terms to the right.
+ 0.4x-0.7x=+60-120
We simplify left and right side of the equation.
-0.3x=-60
We divide both sides of the equation by -0.3 to get x.
x=200
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