Add 30/90 and 5/70
30/90 + 5/70 is 17/42.
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,
5/70 = 5 × 9/70 × 9 = 45/630 - Add the two like fractions:
210/630 + 45/630 = 210 + 45/630 = 255/630 - 255/630 simplified gives 17/42
- So, 30/90 + 5/70 = 17/42
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