It is 21/10 minus 1/10 = 20/10 or 2
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The awnswer is 1 tenth
21
It would be two fifths turned into tenths which is two tenths - (when you turn fifths into tenths, you multiply it by 2 so you do the same with the numerator.) You do not change the denominator so you subtract the numerators 2-1=1. The answer is one tenth.
3 tenths of course !
2