Add 42/40 and 54/80
1st number: 1 2/40, 2nd number: 54/80
42/40 + 54/80 is 69/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
42/40 = 42 × 2/40 × 2 = 84/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
54/80 = 54 × 1/80 × 1 = 54/80 - Add the two like fractions:
84/80 + 54/80 = 84 + 54/80 = 138/80 - 138/80 simplified gives 69/40
- So, 42/40 + 54/80 = 69/40
In mixed form: 129/40
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