Subtract 18/70 from 15/9, Solve 1 6/9

Subtract 18/70 from 15/9

1^st number: 1 6/9, 2^nd number: 18/70

15/9 - 18/70 is 148/105.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 9 × 70 = 630,
15/9 = 15 × 70/9 × 70 = 1050/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
18/70 = 18 × 9/70 × 9 = 162/630
Subtract the two like fractions:
1050/630 - 162/630 = 1050 - 162/630 = 888/630
After reducing the fraction, the answer is 148/105
In mixed form: 143/105

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