Add 15/45 and 90/42
1st number: 15/45, 2nd number: 2 6/42
15/45 + 90/42 is 52/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
15/45 = 15 × 14/45 × 14 = 210/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
90/42 = 90 × 15/42 × 15 = 1350/630 - Add the two like fractions:
210/630 + 1350/630 = 210 + 1350/630 = 1560/630 - 1560/630 simplified gives 52/21
- So, 15/45 + 90/42 = 52/21
In mixed form: 210/21
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