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4500=300+140x
We simplify the equation to the form, which is simple to understand
4500=300+140x
We move all terms containing x to the left and all other terms to the right.
-140x=+300-4500
We simplify left and right side of the equation.
-140x=-4200
We divide both sides of the equation by -0140 to get x.
x=30
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