Add 72/64 and 90/15
1st number: 1 8/64, 2nd number: 6 0/15
72/64 + 90/15 is 57/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 15 is 960
Next, find the equivalent fraction of both fractional numbers with denominator 960 - For the 1st fraction, since 64 × 15 = 960,
72/64 = 72 × 15/64 × 15 = 1080/960 - Likewise, for the 2nd fraction, since 15 × 64 = 960,
90/15 = 90 × 64/15 × 64 = 5760/960 - Add the two like fractions:
1080/960 + 5760/960 = 1080 + 5760/960 = 6840/960 - 6840/960 simplified gives 57/8
- So, 72/64 + 90/15 = 57/8
In mixed form: 71/8
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