Add 30/8 and 45/21
1st number: 3 6/8, 2nd number: 2 3/21
30/8 + 45/21 is 165/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
30/8 = 30 × 21/8 × 21 = 630/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
45/21 = 45 × 8/21 × 8 = 360/168 - Add the two like fractions:
630/168 + 360/168 = 630 + 360/168 = 990/168 - 990/168 simplified gives 165/28
- So, 30/8 + 45/21 = 165/28
In mixed form: 525/28
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