Subtract 7/63 from 45/30, Solve 1 15/30

Subtract 7/63 from 45/30

1^st number: 1 15/30, 2^nd number: 7/63

45/30 - 7/63 is 25/18.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 30 × 21 = 630,
45/30 = 45 × 21/30 × 21 = 945/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
7/63 = 7 × 10/63 × 10 = 70/630
Subtract the two like fractions:
945/630 - 70/630 = 945 - 70/630 = 875/630
After reducing the fraction, the answer is 25/18
In mixed form: 17/18

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