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2.4=3x-4.2.
We move all terms to the left:
2.4-(3x-4.2.)=0
We add all the numbers together, and all the variables
-(+3x)+2.4=0
We get rid of parentheses
-3x+2.4=0
We move all terms containing x to the left, all other terms to the right
-3x=-2.4
x=-2.4/-3
x=2.4/3
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