Add 90/70 and 6/18, Solve 1 20/70 + 6/18 as a fraction

Add 90/70 and 6/18

1^st number: 1 20/70, 2^nd number: 6/18

90/70 + 6/18 is 34/21.

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,
90/70 = 90 × 9/70 × 9 = 810/630
Likewise, for the 2nd fraction, since 18 × 35 = 630,
6/18 = 6 × 35/18 × 35 = 210/630
Add the two like fractions:
810/630 + 210/630 = 810 + 210/630 = 1020/630
1020/630 simplified gives 34/21
So, 90/70 + 6/18 = 34/21
In mixed form: 113/21

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