Add 70/90 and 28/70
70/90 + 28/70 is 53/45.
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,
70/90 = 70 × 7/90 × 7 = 490/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
28/70 = 28 × 9/70 × 9 = 252/630 - Add the two like fractions:
490/630 + 252/630 = 490 + 252/630 = 742/630 - 742/630 simplified gives 53/45
- So, 70/90 + 28/70 = 53/45
In mixed form: 18/45
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