Subtract 70/42 from 16/25, Solve 16/25

Subtract 70/42 from 16/25

1^st number: 16/25, 2^nd number: 1 28/42

16/25 - 70/42 is -77/75.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 42 is 1050

Next, find the equivalent fraction of both fractional numbers with denominator 1050
For the 1st fraction, since 25 × 42 = 1050,
16/25 = 16 × 42/25 × 42 = 672/1050
Likewise, for the 2nd fraction, since 42 × 25 = 1050,
70/42 = 70 × 25/42 × 25 = 1750/1050
Subtract the two like fractions:
672/1050 - 1750/1050 = 672 - 1750/1050 = -1078/1050
After reducing the fraction, the answer is -77/75

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