Add 20/40 and 10/45
20/40 + 10/45 is 13/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
20/40 = 20 × 9/40 × 9 = 180/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
10/45 = 10 × 8/45 × 8 = 80/360 - Add the two like fractions:
180/360 + 80/360 = 180 + 80/360 = 260/360 - 260/360 simplified gives 13/18
- So, 20/40 + 10/45 = 13/18
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