Add 30/45 and 30/70
30/45 + 30/70 is 23/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
30/45 = 30 × 14/45 × 14 = 420/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
30/70 = 30 × 9/70 × 9 = 270/630 - Add the two like fractions:
420/630 + 270/630 = 420 + 270/630 = 690/630 - 690/630 simplified gives 23/21
- So, 30/45 + 30/70 = 23/21
In mixed form: 12/21
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