4.2-x=7.6

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Solution for 4.2-x=7.6 equation: 



4.2-x=7.6

We move all terms to the left:

4.2-x-(7.6)=0

We add all the numbers together, and all the variables

-1x-3.4=0

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

-x=3.4

x=3.4/-1

x=-3+0.4/1

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