Add 25/21 and 90/70
1st number: 1 4/21, 2nd number: 1 20/70
25/21 + 90/70 is 52/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
25/21 = 25 × 10/21 × 10 = 250/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
90/70 = 90 × 3/70 × 3 = 270/210 - Add the two like fractions:
250/210 + 270/210 = 250 + 270/210 = 520/210 - 520/210 simplified gives 52/21
- So, 25/21 + 90/70 = 52/21
In mixed form: 210/21
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