Add 40/45 and 12/18
40/45 + 12/18 is 14/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
40/45 = 40 × 2/45 × 2 = 80/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
12/18 = 12 × 5/18 × 5 = 60/90 - Add the two like fractions:
80/90 + 60/90 = 80 + 60/90 = 140/90 - 140/90 simplified gives 14/9
- So, 40/45 + 12/18 = 14/9
In mixed form: 15/9
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