Add 36/90 and 84/21
1st number: 36/90, 2nd number: 4 0/21
36/90 + 84/21 is 22/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 21 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
36/90 = 36 × 7/90 × 7 = 252/630 - Likewise, for the 2nd fraction, since 21 × 30 = 630,
84/21 = 84 × 30/21 × 30 = 2520/630 - Add the two like fractions:
252/630 + 2520/630 = 252 + 2520/630 = 2772/630 - 2772/630 simplified gives 22/5
- So, 36/90 + 84/21 = 22/5
In mixed form: 42/5
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