Subtract 3/30 from 90/80, Solve 1 10/80

Subtract 3/30 from 90/80

1^st number: 1 10/80, 2^nd number: 3/30

90/80 - 3/30 is 41/40.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 30 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 80 × 3 = 240,
90/80 = 90 × 3/80 × 3 = 270/240
Likewise, for the 2nd fraction, since 30 × 8 = 240,
3/30 = 3 × 8/30 × 8 = 24/240
Subtract the two like fractions:
270/240 - 24/240 = 270 - 24/240 = 246/240
After reducing the fraction, the answer is 41/40
In mixed form: 11/40

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