Subtract 60/42 from 45/30, Solve 1 15/30

Subtract 60/42 from 45/30

1^st number: 1 15/30, 2^nd number: 1 18/42

45/30 - 60/42 is 1/14.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 30 × 7 = 210,
45/30 = 45 × 7/30 × 7 = 315/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
60/42 = 60 × 5/42 × 5 = 300/210
Subtract the two like fractions:
315/210 - 300/210 = 315 - 300/210 = 15/210
After reducing the fraction, the answer is 1/14

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