Add 72/28 and 90/70
1st number: 2 16/28, 2nd number: 1 20/70
72/28 + 90/70 is 27/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
72/28 = 72 × 5/28 × 5 = 360/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
90/70 = 90 × 2/70 × 2 = 180/140 - Add the two like fractions:
360/140 + 180/140 = 360 + 180/140 = 540/140 - 540/140 simplified gives 27/7
- So, 72/28 + 90/70 = 27/7
In mixed form: 36/7
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