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0.85 in fractional notation is 85/100 but when simplified is 17/20 hope I help ;)
Neuron
If you would like to write 0.85 in a fractional notation, you can do this using the following steps:

0.85 = 85/100 which simplifies to 17/20 (the common factor of 85 and 100 is 5, so you can divide both numbers by 5).

The correct result would be 17/20.