Add 28/40 and 63/90
28/40 + 63/90 is 7/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
28/40 = 28 × 9/40 × 9 = 252/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
63/90 = 63 × 4/90 × 4 = 252/360 - Add the two like fractions:
252/360 + 252/360 = 252 + 252/360 = 504/360 - 504/360 simplified gives 7/5
- So, 28/40 + 63/90 = 7/5
In mixed form: 12/5
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