Subtract 42/70 from 21/16
1st number: 1 5/16, 2nd number: 42/70
21/16 - 42/70 is 57/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 16 × 35 = 560,
21/16 = 21 × 35/16 × 35 = 735/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
42/70 = 42 × 8/70 × 8 = 336/560 - Subtract the two like fractions:
735/560 - 336/560 = 735 - 336/560 = 399/560 - After reducing the fraction, the answer is 57/80
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