Add 45/90 and 72/42
1st number: 45/90, 2nd number: 1 30/42
45/90 + 72/42 is 31/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
45/90 = 45 × 7/90 × 7 = 315/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
72/42 = 72 × 15/42 × 15 = 1080/630 - Add the two like fractions:
315/630 + 1080/630 = 315 + 1080/630 = 1395/630 - 1395/630 simplified gives 31/14
- So, 45/90 + 72/42 = 31/14
In mixed form: 23/14
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