Add 45/20 and 63/28
1st number: 2 5/20, 2nd number: 2 7/28
45/20 + 63/28 is 9/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
45/20 = 45 × 7/20 × 7 = 315/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
63/28 = 63 × 5/28 × 5 = 315/140 - Add the two like fractions:
315/140 + 315/140 = 315 + 315/140 = 630/140 - 630/140 simplified gives 9/2
- So, 45/20 + 63/28 = 9/2
In mixed form: 41/2
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