Add 3/45 and 12/70
3/45 + 12/70 is 5/21.
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,
3/45 = 3 × 14/45 × 14 = 42/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
12/70 = 12 × 9/70 × 9 = 108/630 - Add the two like fractions:
42/630 + 108/630 = 42 + 108/630 = 150/630 - 150/630 simplified gives 5/21
- So, 3/45 + 12/70 = 5/21
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