Add 81/42 and 4/35, Solve 1 39/42 + 4/35 as a fraction

Add 81/42 and 4/35

1^st number: 1 39/42, 2^nd number: 4/35

81/42 + 4/35 is 143/70.

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

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
81/42 = 81 × 5/42 × 5 = 405/210
Likewise, for the 2nd fraction, since 35 × 6 = 210,
4/35 = 4 × 6/35 × 6 = 24/210
Add the two like fractions:
405/210 + 24/210 = 405 + 24/210 = 429/210
429/210 simplified gives 143/70
So, 81/42 + 4/35 = 143/70
In mixed form: 23/70

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