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n/4-20=-1
We simplify the equation to the form, which is simple to understand
n/4-20=-1
Simplifying:
+ 0.25n-20=-1
We move all terms containing n to the left and all other terms to the right.
+ 0.25n=-1+20
We simplify left and right side of the equation.
+ 0.25n=+19
We divide both sides of the equation by 0.25 to get n.
n=76
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