Add 72/21 and 24/90
1st number: 3 9/21, 2nd number: 24/90
72/21 + 24/90 is 388/105.
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,
72/21 = 72 × 30/21 × 30 = 2160/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
24/90 = 24 × 7/90 × 7 = 168/630 - Add the two like fractions:
2160/630 + 168/630 = 2160 + 168/630 = 2328/630 - 2328/630 simplified gives 388/105
- So, 72/21 + 24/90 = 388/105
In mixed form: 373/105
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