Add 28/90 and 12/40
28/90 + 12/40 is 11/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
28/90 = 28 × 4/90 × 4 = 112/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
12/40 = 12 × 9/40 × 9 = 108/360 - Add the two like fractions:
112/360 + 108/360 = 112 + 108/360 = 220/360 - 220/360 simplified gives 11/18
- So, 28/90 + 12/40 = 11/18
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