Add 72/9 and 42/40
1st number: 8 0/9, 2nd number: 1 2/40
72/9 + 42/40 is 181/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 9 × 40 = 360,
72/9 = 72 × 40/9 × 40 = 2880/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
42/40 = 42 × 9/40 × 9 = 378/360 - Add the two like fractions:
2880/360 + 378/360 = 2880 + 378/360 = 3258/360 - 3258/360 simplified gives 181/20
- So, 72/9 + 42/40 = 181/20
In mixed form: 91/20
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