Add 8/40 and 21/90
8/40 + 21/90 is 13/30.
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,
8/40 = 8 × 9/40 × 9 = 72/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
21/90 = 21 × 4/90 × 4 = 84/360 - Add the two like fractions:
72/360 + 84/360 = 72 + 84/360 = 156/360 - 156/360 simplified gives 13/30
- So, 8/40 + 21/90 = 13/30
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