2*n+4=40

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Solution for 2*n+4=40 equation: 



2n+4=40

We move all terms to the left:

2n+4-(40)=0

We add all the numbers together, and all the variables

2n-36=0

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

2n=36

n=36/2

n=18

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