Subtract 90/50 from 14/40, Solve 14/40

Subtract 90/50 from 14/40

1^st number: 14/40, 2^nd number: 1 40/50

14/40 - 90/50 is -29/20.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 50 is 200

Next, find the equivalent fraction of both fractional numbers with denominator 200
For the 1st fraction, since 40 × 5 = 200,
14/40 = 14 × 5/40 × 5 = 70/200
Likewise, for the 2nd fraction, since 50 × 4 = 200,
90/50 = 90 × 4/50 × 4 = 360/200
Subtract the two like fractions:
70/200 - 360/200 = 70 - 360/200 = -290/200
After reducing the fraction, the answer is -29/20

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