Add 90/21 and 63/90
1st number: 4 6/21, 2nd number: 63/90
90/21 + 63/90 is 349/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 21 × 30 = 630,
90/21 = 90 × 30/21 × 30 = 2700/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
63/90 = 63 × 7/90 × 7 = 441/630 - Add the two like fractions:
2700/630 + 441/630 = 2700 + 441/630 = 3141/630 - 3141/630 simplified gives 349/70
- So, 90/21 + 63/90 = 349/70
In mixed form: 469/70
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