Add 40/45 and 81/72
1st number: 40/45, 2nd number: 1 9/72
40/45 + 81/72 is 145/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
40/45 = 40 × 8/45 × 8 = 320/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
81/72 = 81 × 5/72 × 5 = 405/360 - Add the two like fractions:
320/360 + 405/360 = 320 + 405/360 = 725/360 - 725/360 simplified gives 145/72
- So, 40/45 + 81/72 = 145/72
In mixed form: 21/72
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