Subtract 56/35 from 30/80, Solve 30/80

Subtract 56/35 from 30/80

1^st number: 30/80, 2^nd number: 1 21/35

30/80 - 56/35 is -49/40.

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

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 80 × 7 = 560,
30/80 = 30 × 7/80 × 7 = 210/560
Likewise, for the 2nd fraction, since 35 × 16 = 560,
56/35 = 56 × 16/35 × 16 = 896/560
Subtract the two like fractions:
210/560 - 896/560 = 210 - 896/560 = -686/560
After reducing the fraction, the answer is -49/40

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