Add 10/40 and 21/30
10/40 + 21/30 is 19/20.
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,
10/40 = 10 × 3/40 × 3 = 30/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
21/30 = 21 × 4/30 × 4 = 84/120 - Add the two like fractions:
30/120 + 84/120 = 30 + 84/120 = 114/120 - 114/120 simplified gives 19/20
- So, 10/40 + 21/30 = 19/20
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