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x-0.4x=304
We move all terms to the left:
x-0.4x-(304)=0
We add all the numbers together, and all the variables
0.6x-304=0
We move all terms containing x to the left, all other terms to the right
0.6x=304
x=304/0.6
x=506+0.40000000000003/0.6
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