Subtract 90/70 from 60/36, Solve 1 24/36

Subtract 90/70 from 60/36

1^st number: 1 24/36, 2^nd number: 1 20/70

60/36 - 90/70 is 8/21.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 70 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 36 × 35 = 1260,
60/36 = 60 × 35/36 × 35 = 2100/1260
Likewise, for the 2nd fraction, since 70 × 18 = 1260,
90/70 = 90 × 18/70 × 18 = 1620/1260
Subtract the two like fractions:
2100/1260 - 1620/1260 = 2100 - 1620/1260 = 480/1260
After reducing the fraction, the answer is 8/21

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