Add 40/20 and 45/72
1st number: 2 0/20, 2nd number: 45/72
40/20 + 45/72 is 21/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
40/20 = 40 × 18/20 × 18 = 720/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
45/72 = 45 × 5/72 × 5 = 225/360 - Add the two like fractions:
720/360 + 225/360 = 720 + 225/360 = 945/360 - 945/360 simplified gives 21/8
- So, 40/20 + 45/72 = 21/8
In mixed form: 25/8
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