Subtract 90/80 from 56/35, Solve 1 21/35

Subtract 90/80 from 56/35

1^st number: 1 21/35, 2^nd number: 1 10/80

56/35 - 90/80 is 19/40.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 80 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 35 × 16 = 560,
56/35 = 56 × 16/35 × 16 = 896/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
90/80 = 90 × 7/80 × 7 = 630/560
Subtract the two like fractions:
896/560 - 630/560 = 896 - 630/560 = 266/560
After reducing the fraction, the answer is 19/40

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