Add 20/54 and 12/90
20/54 + 12/90 is 68/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 90 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
20/54 = 20 × 5/54 × 5 = 100/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
12/90 = 12 × 3/90 × 3 = 36/270 - Add the two like fractions:
100/270 + 36/270 = 100 + 36/270 = 136/270 - 136/270 simplified gives 68/135
- So, 20/54 + 12/90 = 68/135
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