Add 15/90 and 21/16
1st number: 15/90, 2nd number: 1 5/16
15/90 + 21/16 is 71/48.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
15/90 = 15 × 8/90 × 8 = 120/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
21/16 = 21 × 45/16 × 45 = 945/720 - Add the two like fractions:
120/720 + 945/720 = 120 + 945/720 = 1065/720 - 1065/720 simplified gives 71/48
- So, 15/90 + 21/16 = 71/48
In mixed form: 123/48
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