Add 18/9 and 90/70
1st number: 2 0/9, 2nd number: 1 20/70
18/9 + 90/70 is 23/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 9 × 70 = 630,
18/9 = 18 × 70/9 × 70 = 1260/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
90/70 = 90 × 9/70 × 9 = 810/630 - Add the two like fractions:
1260/630 + 810/630 = 1260 + 810/630 = 2070/630 - 2070/630 simplified gives 23/7
- So, 18/9 + 90/70 = 23/7
In mixed form: 32/7
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