Add 12/40 and 80/90
12/40 + 80/90 is 107/90.
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,
12/40 = 12 × 9/40 × 9 = 108/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
80/90 = 80 × 4/90 × 4 = 320/360 - Add the two like fractions:
108/360 + 320/360 = 108 + 320/360 = 428/360 - 428/360 simplified gives 107/90
- So, 12/40 + 80/90 = 107/90
In mixed form: 117/90
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