Add 18/64 and 21/40
18/64 + 21/40 is 129/160.
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,
18/64 = 18 × 5/64 × 5 = 90/320 - Likewise, for the 2nd fraction, since 40 × 8 = 320,
21/40 = 21 × 8/40 × 8 = 168/320 - Add the two like fractions:
90/320 + 168/320 = 90 + 168/320 = 258/320 - 258/320 simplified gives 129/160
- So, 18/64 + 21/40 = 129/160
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