21.2-x=-42.3

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Solution for 21.2-x=-42.3 equation: 



21.2-x=-42.3

We move all terms to the left:

21.2-x-(-42.3)=0

We add all the numbers together, and all the variables

-1x+63.5=0

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

-x=-63.5

x=-63.5/-1

x=63+0.5/1

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