Add 18/20 and 42/48
18/20 + 42/48 is 71/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 20 × 12 = 240,
18/20 = 18 × 12/20 × 12 = 216/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
42/48 = 42 × 5/48 × 5 = 210/240 - Add the two like fractions:
216/240 + 210/240 = 216 + 210/240 = 426/240 - 426/240 simplified gives 71/40
- So, 18/20 + 42/48 = 71/40
In mixed form: 131/40
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