Add 9/21 and 18/90
9/21 + 18/90 is 22/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 21 × 30 = 630,
9/21 = 9 × 30/21 × 30 = 270/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
18/90 = 18 × 7/90 × 7 = 126/630 - Add the two like fractions:
270/630 + 126/630 = 270 + 126/630 = 396/630 - 396/630 simplified gives 22/35
- So, 9/21 + 18/90 = 22/35
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