Add 28/64 and 21/20
1st number: 28/64, 2nd number: 1 1/20
28/64 + 21/20 is 119/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 20 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 64 × 5 = 320,
28/64 = 28 × 5/64 × 5 = 140/320 - Likewise, for the 2nd fraction, since 20 × 16 = 320,
21/20 = 21 × 16/20 × 16 = 336/320 - Add the two like fractions:
140/320 + 336/320 = 140 + 336/320 = 476/320 - 476/320 simplified gives 119/80
- So, 28/64 + 21/20 = 119/80
In mixed form: 139/80
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