Add 72/10 and 21/8
1st number: 7 2/10, 2nd number: 2 5/8
72/10 + 21/8 is 393/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
72/10 = 72 × 4/10 × 4 = 288/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
21/8 = 21 × 5/8 × 5 = 105/40 - Add the two like fractions:
288/40 + 105/40 = 288 + 105/40 = 393/40 - So, 72/10 + 21/8 = 393/40
In mixed form: 933/40
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