Subtract 30/63 from 40/10, Solve 4 0/10

Subtract 30/63 from 40/10

1^st number: 4 0/10, 2^nd number: 30/63

40/10 - 30/63 is 74/21.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 63 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 10 × 63 = 630,
40/10 = 40 × 63/10 × 63 = 2520/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
30/63 = 30 × 10/63 × 10 = 300/630
Subtract the two like fractions:
2520/630 - 300/630 = 2520 - 300/630 = 2220/630
After reducing the fraction, the answer is 74/21
In mixed form: 311/21

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