Add 42/28 and 90/45
1st number: 1 14/28, 2nd number: 2 0/45
42/28 + 90/45 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
42/28 = 42 × 45/28 × 45 = 1890/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
90/45 = 90 × 28/45 × 28 = 2520/1260 - Add the two like fractions:
1890/1260 + 2520/1260 = 1890 + 2520/1260 = 4410/1260 - 4410/1260 simplified gives 7/2
- So, 42/28 + 90/45 = 7/2
In mixed form: 31/2
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