Subtract 72/90 from 42/16
1st number: 2 10/16, 2nd number: 72/90
42/16 - 72/90 is 73/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
42/16 = 42 × 45/16 × 45 = 1890/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
72/90 = 72 × 8/90 × 8 = 576/720 - Subtract the two like fractions:
1890/720 - 576/720 = 1890 - 576/720 = 1314/720 - After reducing the fraction, the answer is 73/40
- In mixed form: 133/40
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