Add 25/70 and 70/90
25/70 + 70/90 is 143/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 90 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 90 × 7 = 630,
70/90 = 70 × 7/90 × 7 = 490/630 - Add the two like fractions:
225/630 + 490/630 = 225 + 490/630 = 715/630 - 715/630 simplified gives 143/126
- So, 25/70 + 70/90 = 143/126
In mixed form: 117/126
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