Unknown number

Samuel wrote unknown number. Then he had add 200000 to the number and the result multiply by three. When it calculated he was surprised, because the result would have received anyway, if write digit to the end of original number. Find unknown number.

Correct result:

x =  85714

Solution:


3(x+200000)=10x+2

3•(x+200000)=10•x+2

7x = 599998

x = 85714

Our simple equation calculator calculates it.



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