100-40n=-300

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Solution for 100-40n=-300 equation: 



100-40n=-300

We move all terms to the left:

100-40n-(-300)=0

We add all the numbers together, and all the variables

-40n+400=0

We move all terms containing n to the left, all other terms to the right

-40n=-400

n=-400/-40

n=+10

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