Add 9/28 and 72/90
9/28 + 72/90 is 157/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
9/28 = 9 × 45/28 × 45 = 405/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
72/90 = 72 × 14/90 × 14 = 1008/1260 - Add the two like fractions:
405/1260 + 1008/1260 = 405 + 1008/1260 = 1413/1260 - 1413/1260 simplified gives 157/140
- So, 9/28 + 72/90 = 157/140
In mixed form: 117/140
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