Add 12/72 and 40/90
12/72 + 40/90 is 11/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
12/72 = 12 × 5/72 × 5 = 60/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
40/90 = 40 × 4/90 × 4 = 160/360 - Add the two like fractions:
60/360 + 160/360 = 60 + 160/360 = 220/360 - 220/360 simplified gives 11/18
- So, 12/72 + 40/90 = 11/18
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