1200-30x=400+50x

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Solution for 1200-30x=400+50x equation: 



1200-30x=400+50x

We move all terms to the left:

1200-30x-(400+50x)=0

We add all the numbers together, and all the variables

-30x-(50x+400)+1200=0

We get rid of parentheses

-30x-50x-400+1200=0

We add all the numbers together, and all the variables

-80x+800=0

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

-80x=-800

x=-800/-80

x=+10

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