Add 40/72 and 21/30
40/72 + 21/30 is 113/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 30 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
40/72 = 40 × 5/72 × 5 = 200/360 - Likewise, for the 2nd fraction, since 30 × 12 = 360,
21/30 = 21 × 12/30 × 12 = 252/360 - Add the two like fractions:
200/360 + 252/360 = 200 + 252/360 = 452/360 - 452/360 simplified gives 113/90
- So, 40/72 + 21/30 = 113/90
In mixed form: 123/90
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