Add 84/45 and 75/21
1st number: 1 39/45, 2nd number: 3 12/21
84/45 + 75/21 is 571/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 21 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
84/45 = 84 × 7/45 × 7 = 588/315 - Likewise, for the 2nd fraction, since 21 × 15 = 315,
75/21 = 75 × 15/21 × 15 = 1125/315 - Add the two like fractions:
588/315 + 1125/315 = 588 + 1125/315 = 1713/315 - 1713/315 simplified gives 571/105
- So, 84/45 + 75/21 = 571/105
In mixed form: 546/105
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