Add 21/30 and 70/8
1st number: 21/30, 2nd number: 8 6/8
21/30 + 70/8 is 189/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
21/30 = 21 × 4/30 × 4 = 84/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
70/8 = 70 × 15/8 × 15 = 1050/120 - Add the two like fractions:
84/120 + 1050/120 = 84 + 1050/120 = 1134/120 - 1134/120 simplified gives 189/20
- So, 21/30 + 70/8 = 189/20
In mixed form: 99/20
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