Add 20/15 and 42/8
1st number: 1 5/15, 2nd number: 5 2/8
20/15 + 42/8 is 79/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
20/15 = 20 × 8/15 × 8 = 160/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
42/8 = 42 × 15/8 × 15 = 630/120 - Add the two like fractions:
160/120 + 630/120 = 160 + 630/120 = 790/120 - 790/120 simplified gives 79/12
- So, 20/15 + 42/8 = 79/12
In mixed form: 67/12
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