Add 20/42 and 18/64
20/42 + 18/64 is 509/672.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 42 × 32 = 1344,
20/42 = 20 × 32/42 × 32 = 640/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
18/64 = 18 × 21/64 × 21 = 378/1344 - Add the two like fractions:
640/1344 + 378/1344 = 640 + 378/1344 = 1018/1344 - 1018/1344 simplified gives 509/672
- So, 20/42 + 18/64 = 509/672
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