Add 30/70 and 20/45
30/70 + 20/45 is 55/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
30/70 = 30 × 9/70 × 9 = 270/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
20/45 = 20 × 14/45 × 14 = 280/630 - Add the two like fractions:
270/630 + 280/630 = 270 + 280/630 = 550/630 - 550/630 simplified gives 55/63
- So, 30/70 + 20/45 = 55/63
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