Subtract 9/40 from 70/50, Solve 1 20/50

Subtract 9/40 from 70/50

1^st number: 1 20/50, 2^nd number: 9/40

70/50 - 9/40 is 47/40.

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

Next, find the equivalent fraction of both fractional numbers with denominator 200
For the 1st fraction, since 50 × 4 = 200,
70/50 = 70 × 4/50 × 4 = 280/200
Likewise, for the 2nd fraction, since 40 × 5 = 200,
9/40 = 9 × 5/40 × 5 = 45/200
Subtract the two like fractions:
280/200 - 45/200 = 280 - 45/200 = 235/200
After reducing the fraction, the answer is 47/40
In mixed form: 17/40

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