Subtract 30/28 from 42/5, Solve 8 2/5

Subtract 30/28 from 42/5

1^st number: 8 2/5, 2^nd number: 1 2/28

42/5 - 30/28 is 513/70.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 28 is 140

Next, find the equivalent fraction of both fractional numbers with denominator 140
For the 1st fraction, since 5 × 28 = 140,
42/5 = 42 × 28/5 × 28 = 1176/140
Likewise, for the 2nd fraction, since 28 × 5 = 140,
30/28 = 30 × 5/28 × 5 = 150/140
Subtract the two like fractions:
1176/140 - 150/140 = 1176 - 150/140 = 1026/140
After reducing the fraction, the answer is 513/70
In mixed form: 723/70

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