Add 90/28 and 72/30
1st number: 3 6/28, 2nd number: 2 12/30
90/28 + 72/30 is 393/70.
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,
90/28 = 90 × 15/28 × 15 = 1350/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
72/30 = 72 × 14/30 × 14 = 1008/420 - Add the two like fractions:
1350/420 + 1008/420 = 1350 + 1008/420 = 2358/420 - 2358/420 simplified gives 393/70
- So, 90/28 + 72/30 = 393/70
In mixed form: 543/70
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