Add 70/12 and 21/28
1st number: 5 10/12, 2nd number: 21/28
70/12 + 21/28 is 79/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
70/12 = 70 × 7/12 × 7 = 490/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
21/28 = 21 × 3/28 × 3 = 63/84 - Add the two like fractions:
490/84 + 63/84 = 490 + 63/84 = 553/84 - 553/84 simplified gives 79/12
- So, 70/12 + 21/28 = 79/12
In mixed form: 67/12
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