Add 81/7 and 75/45
1st number: 11 4/7, 2nd number: 1 30/45
81/7 + 75/45 is 278/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
81/7 = 81 × 45/7 × 45 = 3645/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
75/45 = 75 × 7/45 × 7 = 525/315 - Add the two like fractions:
3645/315 + 525/315 = 3645 + 525/315 = 4170/315 - 4170/315 simplified gives 278/21
- So, 81/7 + 75/45 = 278/21
In mixed form: 135/21
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