Answers

Subtract 50/30 from 72/70

1^st number: 1 2/70, 2^nd number: 1 20/30

72/70 - 50/30 is -67/105.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 30 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 70 × 3 = 210,
   72/70 = 72 × 3/70 × 3 = 216/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   50/30 = 50 × 7/30 × 7 = 350/210
4. Subtract the two like fractions:
   216/210 - 350/210 = 216 - 350/210 = -134/210
5. After reducing the fraction, the answer is -67/105

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