Add 15/8 and 90/72
1st number: 1 7/8, 2nd number: 1 18/72
15/8 + 90/72 is 25/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
15/8 = 15 × 9/8 × 9 = 135/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
90/72 = 90 × 1/72 × 1 = 90/72 - Add the two like fractions:
135/72 + 90/72 = 135 + 90/72 = 225/72 - 225/72 simplified gives 25/8
- So, 15/8 + 90/72 = 25/8
In mixed form: 31/8
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