Add 84/28 and 90/63
1st number: 3 0/28, 2nd number: 1 27/63
84/28 + 90/63 is 31/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
84/28 = 84 × 9/28 × 9 = 756/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
90/63 = 90 × 4/63 × 4 = 360/252 - Add the two like fractions:
756/252 + 360/252 = 756 + 360/252 = 1116/252 - 1116/252 simplified gives 31/7
- So, 84/28 + 90/63 = 31/7
In mixed form: 43/7
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Related: 84/56+90/63