Subtract 40/28 from 80/18, Solve 4 8/18

Subtract 40/28 from 80/18

1^st number: 4 8/18, 2^nd number: 1 12/28

80/18 - 40/28 is 190/63.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 28 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 18 × 14 = 252,
80/18 = 80 × 14/18 × 14 = 1120/252
Likewise, for the 2nd fraction, since 28 × 9 = 252,
40/28 = 40 × 9/28 × 9 = 360/252
Subtract the two like fractions:
1120/252 - 360/252 = 1120 - 360/252 = 760/252
After reducing the fraction, the answer is 190/63
In mixed form: 31/63

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