3.4=4.2-2x

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Solution for 3.4=4.2-2x equation:



3.4=4.2-2x
We move all terms to the left:
3.4-(4.2-2x)=0
We add all the numbers together, and all the variables
-(-2x+4.2)+3.4=0
We get rid of parentheses
2x-4.2+3.4=0
We add all the numbers together, and all the variables
2x-0.8=0
We move all terms containing x to the left, all other terms to the right
2x=0.8
x=0.8/2
x=0.8/2

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