Add 21/30 and 80/40
1st number: 21/30, 2nd number: 2 0/40
21/30 + 80/40 is 27/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 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 40 × 3 = 120,
80/40 = 80 × 3/40 × 3 = 240/120 - Add the two like fractions:
84/120 + 240/120 = 84 + 240/120 = 324/120 - 324/120 simplified gives 27/10
- So, 21/30 + 80/40 = 27/10
In mixed form: 27/10
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