Add 72/18 and 40/32
1st number: 4 0/18, 2nd number: 1 8/32
72/18 + 40/32 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 32 is 288
Next, find the equivalent fraction of both fractional numbers with denominator 288 - For the 1st fraction, since 18 × 16 = 288,
72/18 = 72 × 16/18 × 16 = 1152/288 - Likewise, for the 2nd fraction, since 32 × 9 = 288,
40/32 = 40 × 9/32 × 9 = 360/288 - Add the two like fractions:
1152/288 + 360/288 = 1152 + 360/288 = 1512/288 - 1512/288 simplified gives 21/4
- So, 72/18 + 40/32 = 21/4
In mixed form: 51/4
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