Add 28/40 and 9/28
28/40 + 9/28 is 143/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 28 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
28/40 = 28 × 7/40 × 7 = 196/280 - Likewise, for the 2nd fraction, since 28 × 10 = 280,
9/28 = 9 × 10/28 × 10 = 90/280 - Add the two like fractions:
196/280 + 90/280 = 196 + 90/280 = 286/280 - 286/280 simplified gives 143/140
- So, 28/40 + 9/28 = 143/140
In mixed form: 13/140
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