Add 40/42 and 81/70, Solve 40/42 + 1 11/70 as a fraction

Add 40/42 and 81/70

1^st number: 40/42, 2^nd number: 1 11/70

40/42 + 81/70 is 443/210.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
40/42 = 40 × 5/42 × 5 = 200/210
Likewise, for the 2nd fraction, since 70 × 3 = 210,
81/70 = 81 × 3/70 × 3 = 243/210
Add the two like fractions:
200/210 + 243/210 = 200 + 243/210 = 443/210
So, 40/42 + 81/70 = 443/210
In mixed form: 223/210

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