0,7x-0,4x-0,98x=12,73

Question

0,7x-0,4x-0,98x=12,73

Answer 1

-0,68х=12,73
х=12,73/-0,68
х=-18 49/68

Comments

от куда

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-18 49/68?

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разделите

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внатуре,извините)