Add 21/90 and 70/54
1st number: 21/90, 2nd number: 1 16/54
21/90 + 70/54 is 413/270.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
21/90 = 21 × 3/90 × 3 = 63/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
70/54 = 70 × 5/54 × 5 = 350/270 - Add the two like fractions:
63/270 + 350/270 = 63 + 350/270 = 413/270 - So, 21/90 + 70/54 = 413/270
In mixed form: 1143/270
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