Add 12/45 and 20/7
1st number: 12/45, 2nd number: 2 6/7
12/45 + 20/7 is 328/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
12/45 = 12 × 7/45 × 7 = 84/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
20/7 = 20 × 45/7 × 45 = 900/315 - Add the two like fractions:
84/315 + 900/315 = 84 + 900/315 = 984/315 - 984/315 simplified gives 328/105
- So, 12/45 + 20/7 = 328/105
In mixed form: 313/105
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