Subtract 72/70 from 56/45, Solve 1 11/45

Subtract 72/70 from 56/45

1^st number: 1 11/45, 2^nd number: 1 2/70

56/45 - 72/70 is 68/315.

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,
56/45 = 56 × 14/45 × 14 = 784/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
72/70 = 72 × 9/70 × 9 = 648/630
Subtract the two like fractions:
784/630 - 648/630 = 784 - 648/630 = 136/630
After reducing the fraction, the answer is 68/315

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