Add 20/40 and 84/90
20/40 + 84/90 is 43/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 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 90 × 4 = 360,
84/90 = 84 × 4/90 × 4 = 336/360 - Add the two like fractions:
180/360 + 336/360 = 180 + 336/360 = 516/360 - 516/360 simplified gives 43/30
- So, 20/40 + 84/90 = 43/30
In mixed form: 113/30
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