Add 72/40 and 75/21
1st number: 1 32/40, 2nd number: 3 12/21
72/40 + 75/21 is 188/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 21 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
72/40 = 72 × 21/40 × 21 = 1512/840 - Likewise, for the 2nd fraction, since 21 × 40 = 840,
75/21 = 75 × 40/21 × 40 = 3000/840 - Add the two like fractions:
1512/840 + 3000/840 = 1512 + 3000/840 = 4512/840 - 4512/840 simplified gives 188/35
- So, 72/40 + 75/21 = 188/35
In mixed form: 513/35
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