Subtract 90/42 from 28/25, Solve 1 3/25

Subtract 90/42 from 28/25

1^st number: 1 3/25, 2^nd number: 2 6/42

28/25 - 90/42 is -179/175.

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,
28/25 = 28 × 42/25 × 42 = 1176/1050
Likewise, for the 2nd fraction, since 42 × 25 = 1050,
90/42 = 90 × 25/42 × 25 = 2250/1050
Subtract the two like fractions:
1176/1050 - 2250/1050 = 1176 - 2250/1050 = -1074/1050
After reducing the fraction, the answer is -179/175

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