Add 28/10 and 42/40
1st number: 2 8/10, 2nd number: 1 2/40
28/10 + 42/40 is 77/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
28/10 = 28 × 4/10 × 4 = 112/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
42/40 = 42 × 1/40 × 1 = 42/40 - Add the two like fractions:
112/40 + 42/40 = 112 + 42/40 = 154/40 - 154/40 simplified gives 77/20
- So, 28/10 + 42/40 = 77/20
In mixed form: 317/20
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