Subtract 96/36 from 21/70, Solve 21/70

Subtract 96/36 from 21/70

1^st number: 21/70, 2^nd number: 2 24/36

21/70 - 96/36 is -71/30.

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

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 70 × 18 = 1260,
21/70 = 21 × 18/70 × 18 = 378/1260
Likewise, for the 2nd fraction, since 36 × 35 = 1260,
96/36 = 96 × 35/36 × 35 = 3360/1260
Subtract the two like fractions:
378/1260 - 3360/1260 = 378 - 3360/1260 = -2982/1260
After reducing the fraction, the answer is -71/30

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