Solve for n
n=5
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100n+100\left(n-1\right)=180n
Variable n cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by n.
100n+100n-100=180n
Use the distributive property to multiply 100 by n-1.
200n-100=180n
Combine 100n and 100n to get 200n.
200n-100-180n=0
Subtract 180n from both sides.
20n-100=0
Combine 200n and -180n to get 20n.
20n=100
Add 100 to both sides. Anything plus zero gives itself.
n=\frac{100}{20}
Divide both sides by 20.
n=5
Divide 100 by 20 to get 5.
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