Add 80/70 and 30/28
1st number: 1 10/70, 2nd number: 1 2/28
80/70 + 30/28 is 31/14.
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,
80/70 = 80 × 2/70 × 2 = 160/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
30/28 = 30 × 5/28 × 5 = 150/140 - Add the two like fractions:
160/140 + 150/140 = 160 + 150/140 = 310/140 - 310/140 simplified gives 31/14
- So, 80/70 + 30/28 = 31/14
In mixed form: 23/14
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