Add 72/10 and 84/45
1st number: 7 2/10, 2nd number: 1 39/45
72/10 + 84/45 is 136/15.
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,
84/45 = 84 × 2/45 × 2 = 168/90 - Add the two like fractions:
648/90 + 168/90 = 648 + 168/90 = 816/90 - 816/90 simplified gives 136/15
- So, 72/10 + 84/45 = 136/15
In mixed form: 91/15
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