Add 90/21 and 18/30
1st number: 4 6/21, 2nd number: 18/30
90/21 + 18/30 is 171/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
90/21 = 90 × 10/21 × 10 = 900/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
18/30 = 18 × 7/30 × 7 = 126/210 - Add the two like fractions:
900/210 + 126/210 = 900 + 126/210 = 1026/210 - 1026/210 simplified gives 171/35
- So, 90/21 + 18/30 = 171/35
In mixed form: 431/35
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