Add 21/45 and 12/60
21/45 + 12/60 is 2/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 60 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
21/45 = 21 × 4/45 × 4 = 84/180 - Likewise, for the 2nd fraction, since 60 × 3 = 180,
12/60 = 12 × 3/60 × 3 = 36/180 - Add the two like fractions:
84/180 + 36/180 = 84 + 36/180 = 120/180 - 120/180 simplified gives 2/3
- So, 21/45 + 12/60 = 2/3
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