Add 42/20 and 72/12
1st number: 2 2/20, 2nd number: 6 0/12
42/20 + 72/12 is 81/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
42/20 = 42 × 3/20 × 3 = 126/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
72/12 = 72 × 5/12 × 5 = 360/60 - Add the two like fractions:
126/60 + 360/60 = 126 + 360/60 = 486/60 - 486/60 simplified gives 81/10
- So, 42/20 + 72/12 = 81/10
In mixed form: 81/10
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