Add 1/90 and 1/40
1/90 + 1/40 is 13/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
1/90 = 1 × 4/90 × 4 = 4/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
1/40 = 1 × 9/40 × 9 = 9/360 - Add the two like fractions:
4/360 + 9/360 = 4 + 9/360 = 13/360 - So, 1/90 + 1/40 = 13/360
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