Add 28/12 and 90/63
1st number: 2 4/12, 2nd number: 1 27/63
28/12 + 90/63 is 79/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 12 × 21 = 252,
28/12 = 28 × 21/12 × 21 = 588/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
90/63 = 90 × 4/63 × 4 = 360/252 - Add the two like fractions:
588/252 + 360/252 = 588 + 360/252 = 948/252 - 948/252 simplified gives 79/21
- So, 28/12 + 90/63 = 79/21
In mixed form: 316/21
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