Subtract 21/16 from 30/70
1st number: 30/70, 2nd number: 1 5/16
30/70 - 21/16 is -99/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 16 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
30/70 = 30 × 8/70 × 8 = 240/560 - Likewise, for the 2nd fraction, since 16 × 35 = 560,
21/16 = 21 × 35/16 × 35 = 735/560 - Subtract the two like fractions:
240/560 - 735/560 = 240 - 735/560 = -495/560 - After reducing the fraction, the answer is -99/112
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