Add 42/54 and 40/90
42/54 + 40/90 is 11/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 90 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
42/54 = 42 × 5/54 × 5 = 210/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
40/90 = 40 × 3/90 × 3 = 120/270 - Add the two like fractions:
210/270 + 120/270 = 210 + 120/270 = 330/270 - 330/270 simplified gives 11/9
- So, 42/54 + 40/90 = 11/9
In mixed form: 12/9
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