Subtract 54/18 from 4/70, Solve 4/70

Subtract 54/18 from 4/70

1^st number: 4/70, 2^nd number: 3 0/18

4/70 - 54/18 is -103/35.

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,
4/70 = 4 × 9/70 × 9 = 36/630
Likewise, for the 2nd fraction, since 18 × 35 = 630,
54/18 = 54 × 35/18 × 35 = 1890/630
Subtract the two like fractions:
36/630 - 1890/630 = 36 - 1890/630 = -1854/630
After reducing the fraction, the answer is -103/35

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