-3.5+4.2=x

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Solution for -3.5+4.2=x equation: 



-3.5+4.2=x

We move all terms to the left:

-3.5+4.2-(x)=0

We add all the numbers together, and all the variables

-1x+0.7=0

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

-x=-0.7

x=-0.7/-1

x=0.7/1

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