Add 3/72 and 80/90
3/72 + 80/90 is 67/72.
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,
3/72 = 3 × 5/72 × 5 = 15/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
80/90 = 80 × 4/90 × 4 = 320/360 - Add the two like fractions:
15/360 + 320/360 = 15 + 320/360 = 335/360 - 335/360 simplified gives 67/72
- So, 3/72 + 80/90 = 67/72
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