Add 21/90 and 6/35
21/90 + 6/35 is 17/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 35 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
21/90 = 21 × 7/90 × 7 = 147/630 - Likewise, for the 2nd fraction, since 35 × 18 = 630,
6/35 = 6 × 18/35 × 18 = 108/630 - Add the two like fractions:
147/630 + 108/630 = 147 + 108/630 = 255/630 - 255/630 simplified gives 17/42
- So, 21/90 + 6/35 = 17/42
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