Add 20/64 and 21/30
20/64 + 21/30 is 81/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 30 is 960
Next, find the equivalent fraction of both fractional numbers with denominator 960 - For the 1st fraction, since 64 × 15 = 960,
20/64 = 20 × 15/64 × 15 = 300/960 - Likewise, for the 2nd fraction, since 30 × 32 = 960,
21/30 = 21 × 32/30 × 32 = 672/960 - Add the two like fractions:
300/960 + 672/960 = 300 + 672/960 = 972/960 - 972/960 simplified gives 81/80
- So, 20/64 + 21/30 = 81/80
In mixed form: 11/80
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