5=4.2+x

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Solution for 5=4.2+x equation: 



5=4.2+x

We move all terms to the left:

5-(4.2+x)=0

We add all the numbers together, and all the variables

-(x+4.2)+5=0

We get rid of parentheses

-x-4.2+5=0

We add all the numbers together, and all the variables

-1x+0.8=0

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

-x=-0.8

x=-0.8/-1

x=0.8/1

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