x+30=80-x

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Solution for x+30=80-x equation: 



x+30=80-x

We move all terms to the left:

x+30-(80-x)=0

We add all the numbers together, and all the variables

x-(-1x+80)+30=0

We get rid of parentheses

x+1x-80+30=0

We add all the numbers together, and all the variables

2x-50=0

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

2x=50

x=50/2

x=25

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