Subtract 7/70 from 63/45, Solve 1 18/45

Subtract 7/70 from 63/45

1^st number: 1 18/45, 2^nd number: 7/70

63/45 - 7/70 is 13/10.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 45 × 14 = 630,
63/45 = 63 × 14/45 × 14 = 882/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
7/70 = 7 × 9/70 × 9 = 63/630
Subtract the two like fractions:
882/630 - 63/630 = 882 - 63/630 = 819/630
After reducing the fraction, the answer is 13/10
In mixed form: 13/10

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