Subtract 9/7 from 50/30, Solve 1 20/30

Subtract 9/7 from 50/30

1^st number: 1 20/30, 2^nd number: 1 2/7

50/30 - 9/7 is 8/21.

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,
50/30 = 50 × 7/30 × 7 = 350/210
Likewise, for the 2nd fraction, since 7 × 30 = 210,
9/7 = 9 × 30/7 × 30 = 270/210
Subtract the two like fractions:
350/210 - 270/210 = 350 - 270/210 = 80/210
After reducing the fraction, the answer is 8/21

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