Add 90/64 and 21/40
1st number: 1 26/64, 2nd number: 21/40
90/64 + 21/40 is 309/160.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 40 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 64 × 5 = 320,
90/64 = 90 × 5/64 × 5 = 450/320 - Likewise, for the 2nd fraction, since 40 × 8 = 320,
21/40 = 21 × 8/40 × 8 = 168/320 - Add the two like fractions:
450/320 + 168/320 = 450 + 168/320 = 618/320 - 618/320 simplified gives 309/160
- So, 90/64 + 21/40 = 309/160
In mixed form: 1149/160
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