Subtract 1/30 from 42/10, Solve 4 2/10

Subtract 1/30 from 42/10

1^st number: 4 2/10, 2^nd number: 1/30

42/10 - 1/30 is 25/6.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30

Next, find the equivalent fraction of both fractional numbers with denominator 30
For the 1st fraction, since 10 × 3 = 30,
42/10 = 42 × 3/10 × 3 = 126/30
Likewise, for the 2nd fraction, since 30 × 1 = 30,
1/30 = 1 × 1/30 × 1 = 1/30
Subtract the two like fractions:
126/30 - 1/30 = 126 - 1/30 = 125/30
After reducing the fraction, the answer is 25/6
In mixed form: 41/6

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