Add 84/40 and 63/21
1st number: 2 4/40, 2nd number: 3 0/21
84/40 + 63/21 is 51/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 21 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
84/40 = 84 × 21/40 × 21 = 1764/840 - Likewise, for the 2nd fraction, since 21 × 40 = 840,
63/21 = 63 × 40/21 × 40 = 2520/840 - Add the two like fractions:
1764/840 + 2520/840 = 1764 + 2520/840 = 4284/840 - 4284/840 simplified gives 51/10
- So, 84/40 + 63/21 = 51/10
In mixed form: 51/10
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