Add 20/72 and 10/90
20/72 + 10/90 is 7/18.
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,
20/72 = 20 × 5/72 × 5 = 100/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
10/90 = 10 × 4/90 × 4 = 40/360 - Add the two like fractions:
100/360 + 40/360 = 100 + 40/360 = 140/360 - 140/360 simplified gives 7/18
- So, 20/72 + 10/90 = 7/18
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