Add 20/90 and 12/8
1st number: 20/90, 2nd number: 1 4/8
20/90 + 12/8 is 31/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
20/90 = 20 × 4/90 × 4 = 80/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
12/8 = 12 × 45/8 × 45 = 540/360 - Add the two like fractions:
80/360 + 540/360 = 80 + 540/360 = 620/360 - 620/360 simplified gives 31/18
- So, 20/90 + 12/8 = 31/18
In mixed form: 113/18
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