Add 15/40 and 5/90
15/40 + 5/90 is 31/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
15/40 = 15 × 9/40 × 9 = 135/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
5/90 = 5 × 4/90 × 4 = 20/360 - Add the two like fractions:
135/360 + 20/360 = 135 + 20/360 = 155/360 - 155/360 simplified gives 31/72
- So, 15/40 + 5/90 = 31/72
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