Add 70/90 and 21/27
70/90 + 21/27 is 14/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
70/90 = 70 × 3/90 × 3 = 210/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
21/27 = 21 × 10/27 × 10 = 210/270 - Add the two like fractions:
210/270 + 210/270 = 210 + 210/270 = 420/270 - 420/270 simplified gives 14/9
- So, 70/90 + 21/27 = 14/9
In mixed form: 15/9
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