Question 5228
reciprical is 1 divided by...


so reciprical of 3 is 1/3
so reciprical of 2/5 is 1/(2/5) --> 5/2


a <b>number * its reciprical = 1 </b> ... by definition


so, -3.7 is -3(7/10) which is -37/10, written as a fraction. So, its reciprical is instantly seen to be -10/37 (-0.270270270 as a decimal).


Check...multiply -3.7 by -0.270270270 --> get the answer of 1.


Hope this is clear? :-)


jon.