Subtract 90/50 from 84/40, Solve 2 4/40

Subtract 90/50 from 84/40

1^st number: 2 4/40, 2^nd number: 1 40/50

84/40 - 90/50 is 3/10.

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,
84/40 = 84 × 5/40 × 5 = 420/200
Likewise, for the 2nd fraction, since 50 × 4 = 200,
90/50 = 90 × 4/50 × 4 = 360/200
Subtract the two like fractions:
420/200 - 360/200 = 420 - 360/200 = 60/200
After reducing the fraction, the answer is 3/10

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