Add 72/40 and 98/21, Solve 1 32/40 + 4 14/21 as a fraction

Add 72/40 and 98/21

1^st number: 1 32/40, 2^nd number: 4 14/21

72/40 + 98/21 is 97/15.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 21 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 40 × 21 = 840,
72/40 = 72 × 21/40 × 21 = 1512/840
Likewise, for the 2nd fraction, since 21 × 40 = 840,
98/21 = 98 × 40/21 × 40 = 3920/840
Add the two like fractions:
1512/840 + 3920/840 = 1512 + 3920/840 = 5432/840
5432/840 simplified gives 97/15
So, 72/40 + 98/21 = 97/15
In mixed form: 67/15

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