Add 72/10 and 21/45
1st number: 7 2/10, 2nd number: 21/45
72/10 + 21/45 is 23/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
72/10 = 72 × 9/10 × 9 = 648/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Add the two like fractions:
648/90 + 42/90 = 648 + 42/90 = 690/90 - 690/90 simplified gives 23/3
- So, 72/10 + 21/45 = 23/3
In mixed form: 72/3
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