Add 90/84 and 63/20
1st number: 1 6/84, 2nd number: 3 3/20
90/84 + 63/20 is 591/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
90/84 = 90 × 5/84 × 5 = 450/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
63/20 = 63 × 21/20 × 21 = 1323/420 - Add the two like fractions:
450/420 + 1323/420 = 450 + 1323/420 = 1773/420 - 1773/420 simplified gives 591/140
- So, 90/84 + 63/20 = 591/140
In mixed form: 431/140
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