Add 20/70 and 45/18
1st number: 20/70, 2nd number: 2 9/18
20/70 + 45/18 is 39/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 18 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 18 × 35 = 630,
45/18 = 45 × 35/18 × 35 = 1575/630 - Add the two like fractions:
180/630 + 1575/630 = 180 + 1575/630 = 1755/630 - 1755/630 simplified gives 39/14
- So, 20/70 + 45/18 = 39/14
In mixed form: 211/14
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