Add 21/40 and 84/30
1st number: 21/40, 2nd number: 2 24/30
21/40 + 84/30 is 133/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
21/40 = 21 × 3/40 × 3 = 63/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
84/30 = 84 × 4/30 × 4 = 336/120 - Add the two like fractions:
63/120 + 336/120 = 63 + 336/120 = 399/120 - 399/120 simplified gives 133/40
- So, 21/40 + 84/30 = 133/40
In mixed form: 313/40
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