Subtract 49/18 from 10/70, Solve 10/70

Subtract 49/18 from 10/70

1^st number: 10/70, 2^nd number: 2 13/18

10/70 - 49/18 is -325/126.

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

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 70 × 9 = 630,
10/70 = 10 × 9/70 × 9 = 90/630
Likewise, for the 2nd fraction, since 18 × 35 = 630,
49/18 = 49 × 35/18 × 35 = 1715/630
Subtract the two like fractions:
90/630 - 1715/630 = 90 - 1715/630 = -1625/630
After reducing the fraction, the answer is -325/126

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