Add 90/80 and 15/12
1st number: 1 10/80, 2nd number: 1 3/12
90/80 + 15/12 is 19/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 12 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
90/80 = 90 × 3/80 × 3 = 270/240 - Likewise, for the 2nd fraction, since 12 × 20 = 240,
15/12 = 15 × 20/12 × 20 = 300/240 - Add the two like fractions:
270/240 + 300/240 = 270 + 300/240 = 570/240 - 570/240 simplified gives 19/8
- So, 90/80 + 15/12 = 19/8
In mixed form: 23/8
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