For example, if 2/5 be required to be subtracted from -
we have -
By reference to Fig. 274 an exemplification of this will be seen where we have A C = 3/5, A E = 2/5, and E C = 1/5, and we have -
AC-AE = EC.
We therefore have this rule for the substraction of fractions: Subtract the less from the greater numerator; the remainder will be the numerator of the required fraction. The denominator to be the same as that of the given fractions.