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4.2-0.3(x-6.0)=0.5x
We move all terms to the left:
4.2-0.3(x-6.0)-(0.5x)=0
We add all the numbers together, and all the variables
-0.3(x-6)-(+0.5x)+4.2=0
We multiply parentheses
-0.3x-(+0.5x)+1.8+4.2=0
We get rid of parentheses
-0.3x-0.5x+1.8+4.2=0
We add all the numbers together, and all the variables
-0.8x+6=0
We move all terms containing x to the left, all other terms to the right
-0.8x=-6
x=-6/-0.8
x=7+0.4/0.8
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