Add 40/45 and 9/10
40/45 + 9/10 is 161/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 10 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 10 × 9 = 90,
9/10 = 9 × 9/10 × 9 = 81/90 - Add the two like fractions:
80/90 + 81/90 = 80 + 81/90 = 161/90 - So, 40/45 + 9/10 = 161/90
In mixed form: 171/90
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