Add 72/40 and 4/18
1st number: 1 32/40, 2nd number: 4/18
72/40 + 4/18 is 91/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
72/40 = 72 × 9/40 × 9 = 648/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
4/18 = 4 × 20/18 × 20 = 80/360 - Add the two like fractions:
648/360 + 80/360 = 648 + 80/360 = 728/360 - 728/360 simplified gives 91/45
- So, 72/40 + 4/18 = 91/45
In mixed form: 21/45
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