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-64/21=-2/3n+2/7n
We simplify the equation to the form, which is simple to understand
-64/21=-2/3n+2/7n
We move all terms containing n to the left and all other terms to the right.
-3n-7n=+3.047619047619
We simplify left and right side of the equation.
-10n=+3.047619047619
We divide both sides of the equation by -10 to get n.
n=-0.3047619047619
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