Add 90/63 and 80/12
1st number: 1 27/63, 2nd number: 6 8/12
90/63 + 80/12 is 170/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 12 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
90/63 = 90 × 4/63 × 4 = 360/252 - Likewise, for the 2nd fraction, since 12 × 21 = 252,
80/12 = 80 × 21/12 × 21 = 1680/252 - Add the two like fractions:
360/252 + 1680/252 = 360 + 1680/252 = 2040/252 - 2040/252 simplified gives 170/21
- So, 90/63 + 80/12 = 170/21
In mixed form: 82/21
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