Subtract 80/35 from 60/42, Solve 1 18/42

Subtract 80/35 from 60/42

1^st number: 1 18/42, 2^nd number: 2 10/35

60/42 - 80/35 is -6/7.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
60/42 = 60 × 5/42 × 5 = 300/210
Likewise, for the 2nd fraction, since 35 × 6 = 210,
80/35 = 80 × 6/35 × 6 = 480/210
Subtract the two like fractions:
300/210 - 480/210 = 300 - 480/210 = -180/210
After reducing the fraction, the answer is -6/7

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