20-x=25+4x

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Solution for 20-x=25+4x equation: 



20-x=25+4x

We move all terms to the left:

20-x-(25+4x)=0

We add all the numbers together, and all the variables

-x-(4x+25)+20=0

We add all the numbers together, and all the variables

-1x-(4x+25)+20=0

We get rid of parentheses

-1x-4x-25+20=0

We add all the numbers together, and all the variables

-5x-5=0

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

-5x=5

x=5/-5

x=-1

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