Add 30/64 and 20/42
30/64 + 20/42 is 635/672.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 42 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 64 × 21 = 1344,
30/64 = 30 × 21/64 × 21 = 630/1344 - Likewise, for the 2nd fraction, since 42 × 32 = 1344,
20/42 = 20 × 32/42 × 32 = 640/1344 - Add the two like fractions:
630/1344 + 640/1344 = 630 + 640/1344 = 1270/1344 - 1270/1344 simplified gives 635/672
- So, 30/64 + 20/42 = 635/672
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