Add 21/90 and 70/36
1st number: 21/90, 2nd number: 1 34/36
21/90 + 70/36 is 98/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
21/90 = 21 × 2/90 × 2 = 42/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
70/36 = 70 × 5/36 × 5 = 350/180 - Add the two like fractions:
42/180 + 350/180 = 42 + 350/180 = 392/180 - 392/180 simplified gives 98/45
- So, 21/90 + 70/36 = 98/45
In mixed form: 28/45
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