Add 72/20 and 28/32
1st number: 3 12/20, 2nd number: 28/32
72/20 + 28/32 is 179/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 32 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 20 × 8 = 160,
72/20 = 72 × 8/20 × 8 = 576/160 - Likewise, for the 2nd fraction, since 32 × 5 = 160,
28/32 = 28 × 5/32 × 5 = 140/160 - Add the two like fractions:
576/160 + 140/160 = 576 + 140/160 = 716/160 - 716/160 simplified gives 179/40
- So, 72/20 + 28/32 = 179/40
In mixed form: 419/40
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