2.8=4.2-x

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Solution for 2.8=4.2-x equation: 



2.8=4.2-x

We move all terms to the left:

2.8-(4.2-x)=0

We add all the numbers together, and all the variables

-(-1x+4.2)+2.8=0

We get rid of parentheses

1x-4.2+2.8=0

We add all the numbers together, and all the variables

x-1.4=0

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

x=1.4

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