Add 21/5 and 70/28
1st number: 4 1/5, 2nd number: 2 14/28
21/5 + 70/28 is 67/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 5 × 28 = 140,
21/5 = 21 × 28/5 × 28 = 588/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
70/28 = 70 × 5/28 × 5 = 350/140 - Add the two like fractions:
588/140 + 350/140 = 588 + 350/140 = 938/140 - 938/140 simplified gives 67/10
- So, 21/5 + 70/28 = 67/10
In mixed form: 67/10
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