Add 72/70 and 30/28
1st number: 1 2/70, 2nd number: 1 2/28
72/70 + 30/28 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
72/70 = 72 × 2/70 × 2 = 144/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
30/28 = 30 × 5/28 × 5 = 150/140 - Add the two like fractions:
144/140 + 150/140 = 144 + 150/140 = 294/140 - 294/140 simplified gives 21/10
- So, 72/70 + 30/28 = 21/10
In mixed form: 21/10
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