Add 20/45 and 4/12
20/45 + 4/12 is 7/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
20/45 = 20 × 4/45 × 4 = 80/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
4/12 = 4 × 15/12 × 15 = 60/180 - Add the two like fractions:
80/180 + 60/180 = 80 + 60/180 = 140/180 - 140/180 simplified gives 7/9
- So, 20/45 + 4/12 = 7/9
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