Subtract 3/7 from 72/30, Solve 2 12/30

Subtract 3/7 from 72/30

1^st number: 2 12/30, 2^nd number: 3/7

72/30 - 3/7 is 69/35.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 30 × 7 = 210,
72/30 = 72 × 7/30 × 7 = 504/210
Likewise, for the 2nd fraction, since 7 × 30 = 210,
3/7 = 3 × 30/7 × 30 = 90/210
Subtract the two like fractions:
504/210 - 90/210 = 504 - 90/210 = 414/210
After reducing the fraction, the answer is 69/35
In mixed form: 134/35

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