Subtract 63/70 from 24/20, Solve 1 4/20

Subtract 63/70 from 24/20

1^st number: 1 4/20, 2^nd number: 63/70

24/20 - 63/70 is 3/10.

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,
24/20 = 24 × 7/20 × 7 = 168/140
Likewise, for the 2nd fraction, since 70 × 2 = 140,
63/70 = 63 × 2/70 × 2 = 126/140
Subtract the two like fractions:
168/140 - 126/140 = 168 - 126/140 = 42/140
After reducing the fraction, the answer is 3/10

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