Add 21/72 and 7/64
21/72 + 7/64 is 77/192.
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,
21/72 = 21 × 8/72 × 8 = 168/576 - Likewise, for the 2nd fraction, since 64 × 9 = 576,
7/64 = 7 × 9/64 × 9 = 63/576 - Add the two like fractions:
168/576 + 63/576 = 168 + 63/576 = 231/576 - 231/576 simplified gives 77/192
- So, 21/72 + 7/64 = 77/192
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