Add 18/5 and 21/70
1st number: 3 3/5, 2nd number: 21/70
18/5 + 21/70 is 39/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
18/5 = 18 × 14/5 × 14 = 252/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
21/70 = 21 × 1/70 × 1 = 21/70 - Add the two like fractions:
252/70 + 21/70 = 252 + 21/70 = 273/70 - 273/70 simplified gives 39/10
- So, 18/5 + 21/70 = 39/10
In mixed form: 39/10
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