Answers

Subtract 20/90 from 72/35

1^st number: 2 2/35, 2^nd number: 20/90

72/35 - 20/90 is 578/315.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 35 × 18 = 630,
   72/35 = 72 × 18/35 × 18 = 1296/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   20/90 = 20 × 7/90 × 7 = 140/630
4. Subtract the two like fractions:
   1296/630 - 140/630 = 1296 - 140/630 = 1156/630
5. After reducing the fraction, the answer is 578/315
6. In mixed form: 1263/315

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