Add 72/10 and 42/84
1st number: 7 2/10, 2nd number: 42/84
72/10 + 42/84 is 77/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 10 × 42 = 420,
72/10 = 72 × 42/10 × 42 = 3024/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
42/84 = 42 × 5/84 × 5 = 210/420 - Add the two like fractions:
3024/420 + 210/420 = 3024 + 210/420 = 3234/420 - 3234/420 simplified gives 77/10
- So, 72/10 + 42/84 = 77/10
In mixed form: 77/10
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