Subtract 10/42 from 70/18, Solve 3 16/18

Subtract 10/42 from 70/18

1^st number: 3 16/18, 2^nd number: 10/42

70/18 - 10/42 is 230/63.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
70/18 = 70 × 7/18 × 7 = 490/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
10/42 = 10 × 3/42 × 3 = 30/126
Subtract the two like fractions:
490/126 - 30/126 = 490 - 30/126 = 460/126
After reducing the fraction, the answer is 230/63
In mixed form: 341/63

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