20=19+x

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Solution for 20=19+x equation: 



20=19+x

We move all terms to the left:

20-(19+x)=0

We add all the numbers together, and all the variables

-(x+19)+20=0

We get rid of parentheses

-x-19+20=0

We add all the numbers together, and all the variables

-1x+1=0

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

-x=-1

x=-1/-1

x=1

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