Add 28/75 and 42/90
28/75 + 42/90 is 21/25.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
28/75 = 28 × 6/75 × 6 = 168/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
42/90 = 42 × 5/90 × 5 = 210/450 - Add the two like fractions:
168/450 + 210/450 = 168 + 210/450 = 378/450 - 378/450 simplified gives 21/25
- So, 28/75 + 42/90 = 21/25
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