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3=x/5+1/2
We simplify the equation to the form, which is simple to understand
3=x/5+1/2
We move all terms containing x to the left and all other terms to the right.
-0.2x=0.5-3
We simplify left and right side of the equation.
-0.2x=-2.5
We divide both sides of the equation by -00.2 to get x.
x=12.5
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