Add 42/72 and 20/45
42/72 + 20/45 is 37/36.
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,
42/72 = 42 × 5/72 × 5 = 210/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
20/45 = 20 × 8/45 × 8 = 160/360 - Add the two like fractions:
210/360 + 160/360 = 210 + 160/360 = 370/360 - 370/360 simplified gives 37/36
- So, 42/72 + 20/45 = 37/36
In mixed form: 11/36
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