Add 42/40 and 84/28
1st number: 1 2/40, 2nd number: 3 0/28
42/40 + 84/28 is 81/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 28 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
42/40 = 42 × 7/40 × 7 = 294/280 - Likewise, for the 2nd fraction, since 28 × 10 = 280,
84/28 = 84 × 10/28 × 10 = 840/280 - Add the two like fractions:
294/280 + 840/280 = 294 + 840/280 = 1134/280 - 1134/280 simplified gives 81/20
- So, 42/40 + 84/28 = 81/20
In mixed form: 41/20
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