Add 80/70 and 90/18
1st number: 1 10/70, 2nd number: 5 0/18
80/70 + 90/18 is 43/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
80/70 = 80 × 9/70 × 9 = 720/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
90/18 = 90 × 35/18 × 35 = 3150/630 - Add the two like fractions:
720/630 + 3150/630 = 720 + 3150/630 = 3870/630 - 3870/630 simplified gives 43/7
- So, 80/70 + 90/18 = 43/7
In mixed form: 61/7
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