Subtract 18/84 from 72/40, Solve 1 32/40

Subtract 18/84 from 72/40

1^st number: 1 32/40, 2^nd number: 18/84

72/40 - 18/84 is 111/70.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 84 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 40 × 21 = 840,
72/40 = 72 × 21/40 × 21 = 1512/840
Likewise, for the 2nd fraction, since 84 × 10 = 840,
18/84 = 18 × 10/84 × 10 = 180/840
Subtract the two like fractions:
1512/840 - 180/840 = 1512 - 180/840 = 1332/840
After reducing the fraction, the answer is 111/70
In mixed form: 141/70

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