Add 15/84 and 90/72
1st number: 15/84, 2nd number: 1 18/72
15/84 + 90/72 is 10/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 84 × 6 = 504,
15/84 = 15 × 6/84 × 6 = 90/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
90/72 = 90 × 7/72 × 7 = 630/504 - Add the two like fractions:
90/504 + 630/504 = 90 + 630/504 = 720/504 - 720/504 simplified gives 10/7
- So, 15/84 + 90/72 = 10/7
In mixed form: 13/7
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