Add 72/40 and 42/84
1st number: 1 32/40, 2nd number: 42/84
72/40 + 42/84 is 23/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 84 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 84 × 10 = 840,
42/84 = 42 × 10/84 × 10 = 420/840 - Add the two like fractions:
1512/840 + 420/840 = 1512 + 420/840 = 1932/840 - 1932/840 simplified gives 23/10
- So, 72/40 + 42/84 = 23/10
In mixed form: 23/10
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