Add 81/42 and 8/40
1st number: 1 39/42, 2nd number: 8/40
81/42 + 8/40 is 149/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
81/42 = 81 × 20/42 × 20 = 1620/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
8/40 = 8 × 21/40 × 21 = 168/840 - Add the two like fractions:
1620/840 + 168/840 = 1620 + 168/840 = 1788/840 - 1788/840 simplified gives 149/70
- So, 81/42 + 8/40 = 149/70
In mixed form: 29/70
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