Add 72/21 and 36/90
1st number: 3 9/21, 2nd number: 36/90
72/21 + 36/90 is 134/35.
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,
36/90 = 36 × 7/90 × 7 = 252/630 - Add the two like fractions:
2160/630 + 252/630 = 2160 + 252/630 = 2412/630 - 2412/630 simplified gives 134/35
- So, 72/21 + 36/90 = 134/35
In mixed form: 329/35
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