Add 90/21 and 45/14
1st number: 4 6/21, 2nd number: 3 3/14
90/21 + 45/14 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
90/21 = 90 × 2/21 × 2 = 180/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
45/14 = 45 × 3/14 × 3 = 135/42 - Add the two like fractions:
180/42 + 135/42 = 180 + 135/42 = 315/42 - 315/42 simplified gives 15/2
- So, 90/21 + 45/14 = 15/2
In mixed form: 71/2
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