Add 70/90 and 21/6
1st number: 70/90, 2nd number: 3 3/6
70/90 + 21/6 is 77/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 6 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
70/90 = 70 × 1/90 × 1 = 70/90 - Likewise, for the 2nd fraction, since 6 × 15 = 90,
21/6 = 21 × 15/6 × 15 = 315/90 - Add the two like fractions:
70/90 + 315/90 = 70 + 315/90 = 385/90 - 385/90 simplified gives 77/18
- So, 70/90 + 21/6 = 77/18
In mixed form: 45/18
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