Add 21/18 and 70/90
1st number: 1 3/18, 2nd number: 70/90
21/18 + 70/90 is 35/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
21/18 = 21 × 5/18 × 5 = 105/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
70/90 = 70 × 1/90 × 1 = 70/90 - Add the two like fractions:
105/90 + 70/90 = 105 + 70/90 = 175/90 - 175/90 simplified gives 35/18
- So, 21/18 + 70/90 = 35/18
In mixed form: 117/18
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