Add 90/20 and 21/36
1st number: 4 10/20, 2nd number: 21/36
90/20 + 21/36 is 61/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
90/20 = 90 × 9/20 × 9 = 810/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
21/36 = 21 × 5/36 × 5 = 105/180 - Add the two like fractions:
810/180 + 105/180 = 810 + 105/180 = 915/180 - 915/180 simplified gives 61/12
- So, 90/20 + 21/36 = 61/12
In mixed form: 51/12
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