Add 21/7 and 42/64
1st number: 3 0/7, 2nd number: 42/64
21/7 + 42/64 is 117/32.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 64 is 448
Next, find the equivalent fraction of both fractional numbers with denominator 448 - For the 1st fraction, since 7 × 64 = 448,
21/7 = 21 × 64/7 × 64 = 1344/448 - Likewise, for the 2nd fraction, since 64 × 7 = 448,
42/64 = 42 × 7/64 × 7 = 294/448 - Add the two like fractions:
1344/448 + 294/448 = 1344 + 294/448 = 1638/448 - 1638/448 simplified gives 117/32
- So, 21/7 + 42/64 = 117/32
In mixed form: 321/32
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