Add 45/21 and 72/8
1st number: 2 3/21, 2nd number: 9 0/8
45/21 + 72/8 is 78/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
45/21 = 45 × 8/21 × 8 = 360/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
72/8 = 72 × 21/8 × 21 = 1512/168 - Add the two like fractions:
360/168 + 1512/168 = 360 + 1512/168 = 1872/168 - 1872/168 simplified gives 78/7
- So, 45/21 + 72/8 = 78/7
In mixed form: 111/7
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