Add 70/9 and 70/21
1st number: 7 7/9, 2nd number: 3 7/21
70/9 + 70/21 is 100/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
70/9 = 70 × 7/9 × 7 = 490/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
70/21 = 70 × 3/21 × 3 = 210/63 - Add the two like fractions:
490/63 + 210/63 = 490 + 210/63 = 700/63 - 700/63 simplified gives 100/9
- So, 70/9 + 70/21 = 100/9
In mixed form: 111/9
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