Add 21/9 and 40/70
1st number: 2 3/9, 2nd number: 40/70
21/9 + 40/70 is 61/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 9 × 70 = 630,
21/9 = 21 × 70/9 × 70 = 1470/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
40/70 = 40 × 9/70 × 9 = 360/630 - Add the two like fractions:
1470/630 + 360/630 = 1470 + 360/630 = 1830/630 - 1830/630 simplified gives 61/21
- So, 21/9 + 40/70 = 61/21
In mixed form: 219/21
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