Add 90/35 and 28/42, Solve 2 20/35 + 28/42 as a fraction

Add 90/35 and 28/42

1^st number: 2 20/35, 2^nd number: 28/42

90/35 + 28/42 is 68/21.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 35 × 6 = 210,
90/35 = 90 × 6/35 × 6 = 540/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
28/42 = 28 × 5/42 × 5 = 140/210
Add the two like fractions:
540/210 + 140/210 = 540 + 140/210 = 680/210
680/210 simplified gives 68/21
So, 90/35 + 28/42 = 68/21
In mixed form: 35/21

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