Add 9/28 and 12/40
9/28 + 12/40 is 87/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
9/28 = 9 × 10/28 × 10 = 90/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
12/40 = 12 × 7/40 × 7 = 84/280 - Add the two like fractions:
90/280 + 84/280 = 90 + 84/280 = 174/280 - 174/280 simplified gives 87/140
- So, 9/28 + 12/40 = 87/140
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