Add 18/20 and 40/56
18/20 + 40/56 is 113/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
18/20 = 18 × 14/20 × 14 = 252/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
40/56 = 40 × 5/56 × 5 = 200/280 - Add the two like fractions:
252/280 + 200/280 = 252 + 200/280 = 452/280 - 452/280 simplified gives 113/70
- So, 18/20 + 40/56 = 113/70
In mixed form: 143/70
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