Add 9/72 and 80/90
9/72 + 80/90 is 73/72.
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,
9/72 = 9 × 5/72 × 5 = 45/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
80/90 = 80 × 4/90 × 4 = 320/360 - Add the two like fractions:
45/360 + 320/360 = 45 + 320/360 = 365/360 - 365/360 simplified gives 73/72
- So, 9/72 + 80/90 = 73/72
In mixed form: 11/72
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