Subtract 70/42 from 98/18, Solve 5 8/18

Subtract 70/42 from 98/18

1^st number: 5 8/18, 2^nd number: 1 28/42

98/18 - 70/42 is 34/9.

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,
98/18 = 98 × 7/18 × 7 = 686/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
70/42 = 70 × 3/42 × 3 = 210/126
Subtract the two like fractions:
686/126 - 210/126 = 686 - 210/126 = 476/126
After reducing the fraction, the answer is 34/9
In mixed form: 37/9

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