Subtract 25/42 from 30/4, Solve 7 2/4

Subtract 25/42 from 30/4

1^st number: 7 2/4, 2^nd number: 25/42

30/4 - 25/42 is 145/21.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 42 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 4 × 21 = 84,
30/4 = 30 × 21/4 × 21 = 630/84
Likewise, for the 2nd fraction, since 42 × 2 = 84,
25/42 = 25 × 2/42 × 2 = 50/84
Subtract the two like fractions:
630/84 - 50/84 = 630 - 50/84 = 580/84
After reducing the fraction, the answer is 145/21
In mixed form: 619/21

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