Add 70/21 and 49/18
1st number: 3 7/21, 2nd number: 2 13/18
70/21 + 49/18 is 109/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
70/21 = 70 × 6/21 × 6 = 420/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
49/18 = 49 × 7/18 × 7 = 343/126 - Add the two like fractions:
420/126 + 343/126 = 420 + 343/126 = 763/126 - 763/126 simplified gives 109/18
- So, 70/21 + 49/18 = 109/18
In mixed form: 61/18
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