Add 21/30 and 90/54
1st number: 21/30, 2nd number: 1 36/54
21/30 + 90/54 is 71/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
21/30 = 21 × 9/30 × 9 = 189/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
90/54 = 90 × 5/54 × 5 = 450/270 - Add the two like fractions:
189/270 + 450/270 = 189 + 450/270 = 639/270 - 639/270 simplified gives 71/30
- So, 21/30 + 90/54 = 71/30
In mixed form: 211/30
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