Add 20/70 and 42/9
1st number: 20/70, 2nd number: 4 6/9
20/70 + 42/9 is 104/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 9 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
20/70 = 20 × 9/70 × 9 = 180/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
42/9 = 42 × 70/9 × 70 = 2940/630 - Add the two like fractions:
180/630 + 2940/630 = 180 + 2940/630 = 3120/630 - 3120/630 simplified gives 104/21
- So, 20/70 + 42/9 = 104/21
In mixed form: 420/21
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