Add 42/70 and 12/7, Solve 42/70 + 1 5/7 as a fraction

Add 42/70 and 12/7

1^st number: 42/70, 2^nd number: 1 5/7

42/70 + 12/7 is 81/35.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 7 is 70

Next, find the equivalent fraction of both fractional numbers with denominator 70
For the 1st fraction, since 70 × 1 = 70,
42/70 = 42 × 1/70 × 1 = 42/70
Likewise, for the 2nd fraction, since 7 × 10 = 70,
12/7 = 12 × 10/7 × 10 = 120/70
Add the two like fractions:
42/70 + 120/70 = 42 + 120/70 = 162/70
162/70 simplified gives 81/35
So, 42/70 + 12/7 = 81/35
In mixed form: 211/35

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