Add 42/40 and 45/90
1st number: 1 2/40, 2nd number: 45/90
42/40 + 45/90 is 31/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
42/40 = 42 × 9/40 × 9 = 378/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
45/90 = 45 × 4/90 × 4 = 180/360 - Add the two like fractions:
378/360 + 180/360 = 378 + 180/360 = 558/360 - 558/360 simplified gives 31/20
- So, 42/40 + 45/90 = 31/20
In mixed form: 111/20
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