Add 7/18 and 20/40
7/18 + 20/40 is 8/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
7/18 = 7 × 20/18 × 20 = 140/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
20/40 = 20 × 9/40 × 9 = 180/360 - Add the two like fractions:
140/360 + 180/360 = 140 + 180/360 = 320/360 - 320/360 simplified gives 8/9
- So, 7/18 + 20/40 = 8/9
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