Add 12/90 and 9/20
12/90 + 9/20 is 7/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
12/90 = 12 × 2/90 × 2 = 24/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
9/20 = 9 × 9/20 × 9 = 81/180 - Add the two like fractions:
24/180 + 81/180 = 24 + 81/180 = 105/180 - 105/180 simplified gives 7/12
- So, 12/90 + 9/20 = 7/12
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