Add 72/80 and 42/15
1st number: 72/80, 2nd number: 2 12/15
72/80 + 42/15 is 37/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 15 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
72/80 = 72 × 3/80 × 3 = 216/240 - Likewise, for the 2nd fraction, since 15 × 16 = 240,
42/15 = 42 × 16/15 × 16 = 672/240 - Add the two like fractions:
216/240 + 672/240 = 216 + 672/240 = 888/240 - 888/240 simplified gives 37/10
- So, 72/80 + 42/15 = 37/10
In mixed form: 37/10
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