Add 84/42 and 45/90
1st number: 2 0/42, 2nd number: 45/90
84/42 + 45/90 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
84/42 = 84 × 15/42 × 15 = 1260/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
45/90 = 45 × 7/90 × 7 = 315/630 - Add the two like fractions:
1260/630 + 315/630 = 1260 + 315/630 = 1575/630 - 1575/630 simplified gives 5/2
- So, 84/42 + 45/90 = 5/2
In mixed form: 21/2
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