Subtract 90/70 from 60/48, Solve 1 12/48

Subtract 90/70 from 60/48

1^st number: 1 12/48, 2^nd number: 1 20/70

60/48 - 90/70 is -1/28.

Find the least common denominator or LCM of the two denominators:
LCM of 48 and 70 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 48 × 35 = 1680,
60/48 = 60 × 35/48 × 35 = 2100/1680
Likewise, for the 2nd fraction, since 70 × 24 = 1680,
90/70 = 90 × 24/70 × 24 = 2160/1680
Subtract the two like fractions:
2100/1680 - 2160/1680 = 2100 - 2160/1680 = -60/1680
After reducing the fraction, the answer is -1/28

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