Add 21/49 and 90/45
1st number: 21/49, 2nd number: 2 0/45
21/49 + 90/45 is 17/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 45 is 2205
Next, find the equivalent fraction of both fractional numbers with denominator 2205 - For the 1st fraction, since 49 × 45 = 2205,
21/49 = 21 × 45/49 × 45 = 945/2205 - Likewise, for the 2nd fraction, since 45 × 49 = 2205,
90/45 = 90 × 49/45 × 49 = 4410/2205 - Add the two like fractions:
945/2205 + 4410/2205 = 945 + 4410/2205 = 5355/2205 - 5355/2205 simplified gives 17/7
- So, 21/49 + 90/45 = 17/7
In mixed form: 23/7
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