0.9n+0.5n=42

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Solution for 0.9n+0.5n=42 equation: 



0.9n+0.5n=42

We move all terms to the left:

0.9n+0.5n-(42)=0

We add all the numbers together, and all the variables

1.4n-42=0

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

1.4n=42

n=42/1.4

n=30

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