Add 4/45 and 21/70
4/45 + 21/70 is 7/18.
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,
4/45 = 4 × 14/45 × 14 = 56/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
21/70 = 21 × 9/70 × 9 = 189/630 - Add the two like fractions:
56/630 + 189/630 = 56 + 189/630 = 245/630 - 245/630 simplified gives 7/18
- So, 4/45 + 21/70 = 7/18
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