Subtract 2/70 from 98/20, Solve 4 18/20

Subtract 2/70 from 98/20

1^st number: 4 18/20, 2^nd number: 2/70

98/20 - 2/70 is 341/70.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140

Next, find the equivalent fraction of both fractional numbers with denominator 140
For the 1st fraction, since 20 × 7 = 140,
98/20 = 98 × 7/20 × 7 = 686/140
Likewise, for the 2nd fraction, since 70 × 2 = 140,
2/70 = 2 × 2/70 × 2 = 4/140
Subtract the two like fractions:
686/140 - 4/140 = 686 - 4/140 = 682/140
After reducing the fraction, the answer is 341/70
In mixed form: 461/70

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