Add 84/21 and 75/60
1st number: 4 0/21, 2nd number: 1 15/60
84/21 + 75/60 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
84/21 = 84 × 20/21 × 20 = 1680/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
75/60 = 75 × 7/60 × 7 = 525/420 - Add the two like fractions:
1680/420 + 525/420 = 1680 + 525/420 = 2205/420 - 2205/420 simplified gives 21/4
- So, 84/21 + 75/60 = 21/4
In mixed form: 51/4
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