Add 84/70 and 21/60
1st number: 1 14/70, 2nd number: 21/60
84/70 + 21/60 is 31/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
84/70 = 84 × 6/70 × 6 = 504/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
21/60 = 21 × 7/60 × 7 = 147/420 - Add the two like fractions:
504/420 + 147/420 = 504 + 147/420 = 651/420 - 651/420 simplified gives 31/20
- So, 84/70 + 21/60 = 31/20
In mixed form: 111/20
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