Add 80/90 and 4/20
80/90 + 4/20 is 49/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
80/90 = 80 × 2/90 × 2 = 160/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
4/20 = 4 × 9/20 × 9 = 36/180 - Add the two like fractions:
160/180 + 36/180 = 160 + 36/180 = 196/180 - 196/180 simplified gives 49/45
- So, 80/90 + 4/20 = 49/45
In mixed form: 14/45
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