Add 72/40 and 2/21
1st number: 1 32/40, 2nd number: 2/21
72/40 + 2/21 is 199/105.
Steps for adding fractions
- 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,
2/21 = 2 × 40/21 × 40 = 80/840 - Add the two like fractions:
1512/840 + 80/840 = 1512 + 80/840 = 1592/840 - 1592/840 simplified gives 199/105
- So, 72/40 + 2/21 = 199/105
In mixed form: 194/105
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