Add 30/90 and 28/70
30/90 + 28/70 is 11/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
30/90 = 30 × 7/90 × 7 = 210/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
28/70 = 28 × 9/70 × 9 = 252/630 - Add the two like fractions:
210/630 + 252/630 = 210 + 252/630 = 462/630 - 462/630 simplified gives 11/15
- So, 30/90 + 28/70 = 11/15
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