Add 45/21 and 72/9
1st number: 2 3/21, 2nd number: 8 0/9
45/21 + 72/9 is 71/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
45/21 = 45 × 3/21 × 3 = 135/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
72/9 = 72 × 7/9 × 7 = 504/63 - Add the two like fractions:
135/63 + 504/63 = 135 + 504/63 = 639/63 - 639/63 simplified gives 71/7
- So, 45/21 + 72/9 = 71/7
In mixed form: 101/7
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