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.40n-.50n=220
We simplify the equation to the form, which is simple to understand
.40n-.50n=220
We move all terms containing n to the left and all other terms to the right.
+ 0.4n-0.5n=+220
We simplify left and right side of the equation.
-0.1n=+220
We divide both sides of the equation by -0.1 to get n.
n=-2200
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