Add 30/70 and 20/90
30/70 + 20/90 is 41/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 90 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 90 × 7 = 630,
20/90 = 20 × 7/90 × 7 = 140/630 - Add the two like fractions:
270/630 + 140/630 = 270 + 140/630 = 410/630 - 410/630 simplified gives 41/63
- So, 30/70 + 20/90 = 41/63
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