Add 28/70 and 42/18, Solve 28/70 + 2 6/18 as a fraction

Add 28/70 and 42/18

1^st number: 28/70, 2^nd number: 2 6/18

28/70 + 42/18 is 41/15.

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,
28/70 = 28 × 9/70 × 9 = 252/630
Likewise, for the 2nd fraction, since 18 × 35 = 630,
42/18 = 42 × 35/18 × 35 = 1470/630
Add the two like fractions:
252/630 + 1470/630 = 252 + 1470/630 = 1722/630
1722/630 simplified gives 41/15
So, 28/70 + 42/18 = 41/15
In mixed form: 211/15

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