Add 40/12 and 21/90
1st number: 3 4/12, 2nd number: 21/90
40/12 + 21/90 is 107/30.
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,
40/12 = 40 × 15/12 × 15 = 600/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
21/90 = 21 × 2/90 × 2 = 42/180 - Add the two like fractions:
600/180 + 42/180 = 600 + 42/180 = 642/180 - 642/180 simplified gives 107/30
- So, 40/12 + 21/90 = 107/30
In mixed form: 317/30
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