Add 12/40 and 42/9
1st number: 12/40, 2nd number: 4 6/9
12/40 + 42/9 is 149/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
12/40 = 12 × 9/40 × 9 = 108/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
42/9 = 42 × 40/9 × 40 = 1680/360 - Add the two like fractions:
108/360 + 1680/360 = 108 + 1680/360 = 1788/360 - 1788/360 simplified gives 149/30
- So, 12/40 + 42/9 = 149/30
In mixed form: 429/30
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