Add 72/40 and 42/30
1st number: 1 32/40, 2nd number: 1 12/30
72/40 + 42/30 is 16/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
72/40 = 72 × 3/40 × 3 = 216/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
42/30 = 42 × 4/30 × 4 = 168/120 - Add the two like fractions:
216/120 + 168/120 = 216 + 168/120 = 384/120 - 384/120 simplified gives 16/5
- So, 72/40 + 42/30 = 16/5
In mixed form: 31/5
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