Add 7/28 and 90/30
1st number: 7/28, 2nd number: 3 0/30
7/28 + 90/30 is 13/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
7/28 = 7 × 15/28 × 15 = 105/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
90/30 = 90 × 14/30 × 14 = 1260/420 - Add the two like fractions:
105/420 + 1260/420 = 105 + 1260/420 = 1365/420 - 1365/420 simplified gives 13/4
- So, 7/28 + 90/30 = 13/4
In mixed form: 31/4
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