Subtract 49/70 from 25/18, Solve 1 7/18

Subtract 49/70 from 25/18

1^st number: 1 7/18, 2^nd number: 49/70

25/18 - 49/70 is 31/45.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 70 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 18 × 35 = 630,
25/18 = 25 × 35/18 × 35 = 875/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
49/70 = 49 × 9/70 × 9 = 441/630
Subtract the two like fractions:
875/630 - 441/630 = 875 - 441/630 = 434/630
After reducing the fraction, the answer is 31/45

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