Add 28/90 and 20/70
28/90 + 20/70 is 188/315.
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,
28/90 = 28 × 7/90 × 7 = 196/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
20/70 = 20 × 9/70 × 9 = 180/630 - Add the two like fractions:
196/630 + 180/630 = 196 + 180/630 = 376/630 - 376/630 simplified gives 188/315
- So, 28/90 + 20/70 = 188/315
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