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.7n-15+n=2n-.4n
We simplify the equation to the form, which is simple to understand
.7n-15+n=2n-.4n
We move all terms containing n to the left and all other terms to the right.
+ 0.7n+1n-2n + 0.4n=+15
We simplify left and right side of the equation.
+ 0.1n=+15
We divide both sides of the equation by 0.1 to get n.
n=150
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