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35n+720=1000
We simplify the equation to the form, which is simple to understand
35n+720=1000
We move all terms containing n to the left and all other terms to the right.
+35n=+1000-720
We simplify left and right side of the equation.
+35n=+280
We divide both sides of the equation by 35 to get n.
n=8
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