Subtract 18/72 from 40/35, Solve 1 5/35

Subtract 18/72 from 40/35

1^st number: 1 5/35, 2^nd number: 18/72

40/35 - 18/72 is 25/28.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 72 is 2520

Next, find the equivalent fraction of both fractional numbers with denominator 2520
For the 1st fraction, since 35 × 72 = 2520,
40/35 = 40 × 72/35 × 72 = 2880/2520
Likewise, for the 2nd fraction, since 72 × 35 = 2520,
18/72 = 18 × 35/72 × 35 = 630/2520
Subtract the two like fractions:
2880/2520 - 630/2520 = 2880 - 630/2520 = 2250/2520
After reducing the fraction, the answer is 25/28

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