Add 90/36 and 21/80
1st number: 2 18/36, 2nd number: 21/80
90/36 + 21/80 is 221/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 36 × 20 = 720,
90/36 = 90 × 20/36 × 20 = 1800/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
21/80 = 21 × 9/80 × 9 = 189/720 - Add the two like fractions:
1800/720 + 189/720 = 1800 + 189/720 = 1989/720 - 1989/720 simplified gives 221/80
- So, 90/36 + 21/80 = 221/80
In mixed form: 261/80
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