Add 90/28 and 20/72
1st number: 3 6/28, 2nd number: 20/72
90/28 + 20/72 is 220/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 28 × 18 = 504,
90/28 = 90 × 18/28 × 18 = 1620/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
20/72 = 20 × 7/72 × 7 = 140/504 - Add the two like fractions:
1620/504 + 140/504 = 1620 + 140/504 = 1760/504 - 1760/504 simplified gives 220/63
- So, 90/28 + 20/72 = 220/63
In mixed form: 331/63
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