Add 21/7 and 12/8
1st number: 3 0/7, 2nd number: 1 4/8
21/7 + 12/8 is 9/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
21/7 = 21 × 8/7 × 8 = 168/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
12/8 = 12 × 7/8 × 7 = 84/56 - Add the two like fractions:
168/56 + 84/56 = 168 + 84/56 = 252/56 - 252/56 simplified gives 9/2
- So, 21/7 + 12/8 = 9/2
In mixed form: 41/2
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