Add 72/40 and 42/20
1st number: 1 32/40, 2nd number: 2 2/20
72/40 + 42/20 is 39/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
72/40 = 72 × 1/40 × 1 = 72/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
42/20 = 42 × 2/20 × 2 = 84/40 - Add the two like fractions:
72/40 + 84/40 = 72 + 84/40 = 156/40 - 156/40 simplified gives 39/10
- So, 72/40 + 42/20 = 39/10
In mixed form: 39/10
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