Add 28/30 and 15/40
28/30 + 15/40 is 157/120.
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,
28/30 = 28 × 4/30 × 4 = 112/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
15/40 = 15 × 3/40 × 3 = 45/120 - Add the two like fractions:
112/120 + 45/120 = 112 + 45/120 = 157/120 - So, 28/30 + 15/40 = 157/120
In mixed form: 137/120
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