Add 28/70 and 36/90
28/70 + 36/90 is 4/5.
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,
28/70 = 28 × 9/70 × 9 = 252/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
36/90 = 36 × 7/90 × 7 = 252/630 - Add the two like fractions:
252/630 + 252/630 = 252 + 252/630 = 504/630 - 504/630 simplified gives 4/5
- So, 28/70 + 36/90 = 4/5
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