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x-0.3x=3000000
We move all terms to the left:
x-0.3x-(3000000)=0
We add all the numbers together, and all the variables
0.7x-3000000=0
We move all terms containing x to the left, all other terms to the right
0.7x=3000000
x=3000000/0.7
x=4285714+0.200000000186/0.7
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