Subtract 7/70 from 28/18, Solve 1 10/18

Subtract 7/70 from 28/18

1^st number: 1 10/18, 2^nd number: 7/70

28/18 - 7/70 is 131/90.

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,
28/18 = 28 × 35/18 × 35 = 980/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
7/70 = 7 × 9/70 × 9 = 63/630
Subtract the two like fractions:
980/630 - 63/630 = 980 - 63/630 = 917/630
After reducing the fraction, the answer is 131/90
In mixed form: 141/90

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