Add 45/40 and 20/90
1st number: 1 5/40, 2nd number: 20/90
45/40 + 20/90 is 97/72.
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,
45/40 = 45 × 9/40 × 9 = 405/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
20/90 = 20 × 4/90 × 4 = 80/360 - Add the two like fractions:
405/360 + 80/360 = 405 + 80/360 = 485/360 - 485/360 simplified gives 97/72
- So, 45/40 + 20/90 = 97/72
In mixed form: 125/72
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