Add 20/72 and 40/45
20/72 + 40/45 is 7/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
20/72 = 20 × 5/72 × 5 = 100/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
40/45 = 40 × 8/45 × 8 = 320/360 - Add the two like fractions:
100/360 + 320/360 = 100 + 320/360 = 420/360 - 420/360 simplified gives 7/6
- So, 20/72 + 40/45 = 7/6
In mixed form: 11/6
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