Add 36/42 and 15/20
36/42 + 15/20 is 45/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
36/42 = 36 × 10/42 × 10 = 360/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
15/20 = 15 × 21/20 × 21 = 315/420 - Add the two like fractions:
360/420 + 315/420 = 360 + 315/420 = 675/420 - 675/420 simplified gives 45/28
- So, 36/42 + 15/20 = 45/28
In mixed form: 117/28
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