Add 9/20 and 90/84
1st number: 9/20, 2nd number: 1 6/84
9/20 + 90/84 is 213/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
9/20 = 9 × 21/20 × 21 = 189/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
90/84 = 90 × 5/84 × 5 = 450/420 - Add the two like fractions:
189/420 + 450/420 = 189 + 450/420 = 639/420 - 639/420 simplified gives 213/140
- So, 9/20 + 90/84 = 213/140
In mixed form: 173/140
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