Add 3/90 and 4/70
3/90 + 4/70 is 19/210.
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,
3/90 = 3 × 7/90 × 7 = 21/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
4/70 = 4 × 9/70 × 9 = 36/630 - Add the two like fractions:
21/630 + 36/630 = 21 + 36/630 = 57/630 - 57/630 simplified gives 19/210
- So, 3/90 + 4/70 = 19/210
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