Add 12/15 and 42/80
12/15 + 42/80 is 53/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
12/15 = 12 × 16/15 × 16 = 192/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
42/80 = 42 × 3/80 × 3 = 126/240 - Add the two like fractions:
192/240 + 126/240 = 192 + 126/240 = 318/240 - 318/240 simplified gives 53/40
- So, 12/15 + 42/80 = 53/40
In mixed form: 113/40
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