Add 28/40 and 21/64
28/40 + 21/64 is 329/320.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 64 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 40 × 8 = 320,
28/40 = 28 × 8/40 × 8 = 224/320 - Likewise, for the 2nd fraction, since 64 × 5 = 320,
21/64 = 21 × 5/64 × 5 = 105/320 - Add the two like fractions:
224/320 + 105/320 = 224 + 105/320 = 329/320 - So, 28/40 + 21/64 = 329/320
In mixed form: 19/320
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