Add 72/40 and 28/42
1st number: 1 32/40, 2nd number: 28/42
72/40 + 28/42 is 37/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 42 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 42 × 20 = 840,
28/42 = 28 × 20/42 × 20 = 560/840 - Add the two like fractions:
1512/840 + 560/840 = 1512 + 560/840 = 2072/840 - 2072/840 simplified gives 37/15
- So, 72/40 + 28/42 = 37/15
In mixed form: 27/15
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