Add 40/45 and 45/90
40/45 + 45/90 is 25/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 90 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 90 × 1 = 90,
45/90 = 45 × 1/90 × 1 = 45/90 - Add the two like fractions:
80/90 + 45/90 = 80 + 45/90 = 125/90 - 125/90 simplified gives 25/18
- So, 40/45 + 45/90 = 25/18
In mixed form: 17/18
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