Add 12/90 and 14/21
12/90 + 14/21 is 4/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 21 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
12/90 = 12 × 7/90 × 7 = 84/630 - Likewise, for the 2nd fraction, since 21 × 30 = 630,
14/21 = 14 × 30/21 × 30 = 420/630 - Add the two like fractions:
84/630 + 420/630 = 84 + 420/630 = 504/630 - 504/630 simplified gives 4/5
- So, 12/90 + 14/21 = 4/5
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