Subtract 72/90 from 50/42
1st number: 1 8/42, 2nd number: 72/90
50/42 - 72/90 is 41/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
50/42 = 50 × 15/42 × 15 = 750/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
72/90 = 72 × 7/90 × 7 = 504/630 - Subtract the two like fractions:
750/630 - 504/630 = 750 - 504/630 = 246/630 - After reducing the fraction, the answer is 41/105
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