Add 21/70 and 72/5
1st number: 21/70, 2nd number: 14 2/5
21/70 + 72/5 is 147/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 5 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 5 × 14 = 70,
72/5 = 72 × 14/5 × 14 = 1008/70 - Add the two like fractions:
21/70 + 1008/70 = 21 + 1008/70 = 1029/70 - 1029/70 simplified gives 147/10
- So, 21/70 + 72/5 = 147/10
In mixed form: 147/10
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