Add 42/90 and 21/27
42/90 + 21/27 is 56/45.
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,
42/90 = 42 × 3/90 × 3 = 126/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
21/27 = 21 × 10/27 × 10 = 210/270 - Add the two like fractions:
126/270 + 210/270 = 126 + 210/270 = 336/270 - 336/270 simplified gives 56/45
- So, 42/90 + 21/27 = 56/45
In mixed form: 111/45
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