Add 21/4 and 70/25
1st number: 5 1/4, 2nd number: 2 20/25
21/4 + 70/25 is 161/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 25 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 4 × 25 = 100,
21/4 = 21 × 25/4 × 25 = 525/100 - Likewise, for the 2nd fraction, since 25 × 4 = 100,
70/25 = 70 × 4/25 × 4 = 280/100 - Add the two like fractions:
525/100 + 280/100 = 525 + 280/100 = 805/100 - 805/100 simplified gives 161/20
- So, 21/4 + 70/25 = 161/20
In mixed form: 81/20
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