Add 42/30 and 49/40
1st number: 1 12/30, 2nd number: 1 9/40
42/30 + 49/40 is 21/8.
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,
42/30 = 42 × 4/30 × 4 = 168/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
49/40 = 49 × 3/40 × 3 = 147/120 - Add the two like fractions:
168/120 + 147/120 = 168 + 147/120 = 315/120 - 315/120 simplified gives 21/8
- So, 42/30 + 49/40 = 21/8
In mixed form: 25/8
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