Subtract 42/10 from 28/4, Solve 7 0/4

Subtract 42/10 from 28/4

1^st number: 7 0/4, 2^nd number: 4 2/10

28/4 - 42/10 is 14/5.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 10 is 20

Next, find the equivalent fraction of both fractional numbers with denominator 20
For the 1st fraction, since 4 × 5 = 20,
28/4 = 28 × 5/4 × 5 = 140/20
Likewise, for the 2nd fraction, since 10 × 2 = 20,
42/10 = 42 × 2/10 × 2 = 84/20
Subtract the two like fractions:
140/20 - 84/20 = 140 - 84/20 = 56/20
After reducing the fraction, the answer is 14/5
In mixed form: 24/5

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