Add 90/72 and 81/64
1st number: 1 18/72, 2nd number: 1 17/64
90/72 + 81/64 is 161/64.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 64 is 576
Next, find the equivalent fraction of both fractional numbers with denominator 576 - For the 1st fraction, since 72 × 8 = 576,
90/72 = 90 × 8/72 × 8 = 720/576 - Likewise, for the 2nd fraction, since 64 × 9 = 576,
81/64 = 81 × 9/64 × 9 = 729/576 - Add the two like fractions:
720/576 + 729/576 = 720 + 729/576 = 1449/576 - 1449/576 simplified gives 161/64
- So, 90/72 + 81/64 = 161/64
In mixed form: 233/64
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