Add 84/80 and 90/12
1st number: 1 4/80, 2nd number: 7 6/12
84/80 + 90/12 is 171/20.
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,
84/80 = 84 × 3/80 × 3 = 252/240 - Likewise, for the 2nd fraction, since 12 × 20 = 240,
90/12 = 90 × 20/12 × 20 = 1800/240 - Add the two like fractions:
252/240 + 1800/240 = 252 + 1800/240 = 2052/240 - 2052/240 simplified gives 171/20
- So, 84/80 + 90/12 = 171/20
In mixed form: 811/20
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