Add 9/10 and 21/45
9/10 + 21/45 is 41/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
9/10 = 9 × 9/10 × 9 = 81/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Add the two like fractions:
81/90 + 42/90 = 81 + 42/90 = 123/90 - 123/90 simplified gives 41/30
- So, 9/10 + 21/45 = 41/30
In mixed form: 111/30
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