Add 80/12 and 42/90
1st number: 6 8/12, 2nd number: 42/90
80/12 + 42/90 is 107/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
80/12 = 80 × 15/12 × 15 = 1200/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
42/90 = 42 × 2/90 × 2 = 84/180 - Add the two like fractions:
1200/180 + 84/180 = 1200 + 84/180 = 1284/180 - 1284/180 simplified gives 107/15
- So, 80/12 + 42/90 = 107/15
In mixed form: 72/15
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