Add 3/90 and 4/20
3/90 + 4/20 is 7/30.
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,
3/90 = 3 × 2/90 × 2 = 6/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
4/20 = 4 × 9/20 × 9 = 36/180 - Add the two like fractions:
6/180 + 36/180 = 6 + 36/180 = 42/180 - 42/180 simplified gives 7/30
- So, 3/90 + 4/20 = 7/30
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