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3000+200x=1.400+400x
We move all terms to the left:
3000+200x-(1.400+400x)=0
We add all the numbers together, and all the variables
200x-(400x+1.4)+3000=0
We get rid of parentheses
200x-400x-1.4+3000=0
We add all the numbers together, and all the variables
-200x+2998.6=0
We move all terms containing x to the left, all other terms to the right
-200x=-2998.6
x=-2998.6/-200
x=14+76.384615384618/76.92307692308
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