Add 21/45 and 18/32
21/45 + 18/32 is 247/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 32 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 45 × 32 = 1440,
21/45 = 21 × 32/45 × 32 = 672/1440 - Likewise, for the 2nd fraction, since 32 × 45 = 1440,
18/32 = 18 × 45/32 × 45 = 810/1440 - Add the two like fractions:
672/1440 + 810/1440 = 672 + 810/1440 = 1482/1440 - 1482/1440 simplified gives 247/240
- So, 21/45 + 18/32 = 247/240
In mixed form: 17/240
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