Add 20/90 and 15/70
20/90 + 15/70 is 55/126.
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,
20/90 = 20 × 7/90 × 7 = 140/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
15/70 = 15 × 9/70 × 9 = 135/630 - Add the two like fractions:
140/630 + 135/630 = 140 + 135/630 = 275/630 - 275/630 simplified gives 55/126
- So, 20/90 + 15/70 = 55/126
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