Add 21/8 and 40/45
1st number: 2 5/8, 2nd number: 40/45
21/8 + 40/45 is 253/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 8 × 45 = 360,
21/8 = 21 × 45/8 × 45 = 945/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
40/45 = 40 × 8/45 × 8 = 320/360 - Add the two like fractions:
945/360 + 320/360 = 945 + 320/360 = 1265/360 - 1265/360 simplified gives 253/72
- So, 21/8 + 40/45 = 253/72
In mixed form: 337/72
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