Add 25/70 and 21/63
25/70 + 21/63 is 29/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
25/70 = 25 × 9/70 × 9 = 225/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
21/63 = 21 × 10/63 × 10 = 210/630 - Add the two like fractions:
225/630 + 210/630 = 225 + 210/630 = 435/630 - 435/630 simplified gives 29/42
- So, 25/70 + 21/63 = 29/42
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