Add 45/72 and 45/90
45/72 + 45/90 is 9/8.
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,
45/72 = 45 × 5/72 × 5 = 225/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
45/90 = 45 × 4/90 × 4 = 180/360 - Add the two like fractions:
225/360 + 180/360 = 225 + 180/360 = 405/360 - 405/360 simplified gives 9/8
- So, 45/72 + 45/90 = 9/8
In mixed form: 11/8
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Related: 90/72+45/90