Add 28/45 and 7/20
28/45 + 7/20 is 35/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
28/45 = 28 × 4/45 × 4 = 112/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
7/20 = 7 × 9/20 × 9 = 63/180 - Add the two like fractions:
112/180 + 63/180 = 112 + 63/180 = 175/180 - 175/180 simplified gives 35/36
- So, 28/45 + 7/20 = 35/36
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