Add 28/14 and 90/72
1st number: 2 0/14, 2nd number: 1 18/72
28/14 + 90/72 is 13/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 14 × 36 = 504,
28/14 = 28 × 36/14 × 36 = 1008/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
90/72 = 90 × 7/72 × 7 = 630/504 - Add the two like fractions:
1008/504 + 630/504 = 1008 + 630/504 = 1638/504 - 1638/504 simplified gives 13/4
- So, 28/14 + 90/72 = 13/4
In mixed form: 31/4
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