50+.3n=20+.4n

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Solution for 50+.3n=20+.4n equation: 



50+.3n=20+.4n

We move all terms to the left:

50+.3n-(20+.4n)=0

We add all the numbers together, and all the variables

.3n-(.4n+20)+50=0

We get rid of parentheses

.3n-.4n-20+50=0

We add all the numbers together, and all the variables

-0.1n+30=0

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

-0.1n=-30

n=-30/-0.1

n=+300

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