Add 21/70 and 84/7
1st number: 21/70, 2nd number: 12 0/7
21/70 + 84/7 is 123/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
21/70 = 21 × 1/70 × 1 = 21/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
84/7 = 84 × 10/7 × 10 = 840/70 - Add the two like fractions:
21/70 + 840/70 = 21 + 840/70 = 861/70 - 861/70 simplified gives 123/10
- So, 21/70 + 84/7 = 123/10
In mixed form: 123/10
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